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WGU C165 Integrated Physical Sciences Questions and Answers 2023
Physics The study of forces, energy, motion Chemistry The study of atoms and molecules, their structures, and their interactions to form substance... [Show More] s Earth science The study of the Earth's structure and composition, and processes that change Earth essential attributes of science Studies the natural world Uses testable ideas Relies on data from observations/experiments Presented for evaluation by other scientists Leads to further questions/research variables The changing quantities in an experiment independent variable What you change in an experiment on purpose dependent variable The variable that changes because of an independent variable control variable The variable(s) you don't want to study, need to be either eliminated or kept constant observational study When systems are observed as they appear in nature, researchers do not attempt to change them physical model A model of a physical phenomenon, such as a planetary system conceptual model A model used to visualize things that cannot be seen, such as atoms mathematical model A model that treats physical objects/phenomena using mathematical methods computer model A detailed, complex model calculated by a computer principle of falsification Principle that only falsifiable statements can be subject to scientific inquiry hypothesis A testable statement about how something in nature works law A concise statement that is supported by scientific evidence and repeated experiments, describes a widespread pattern in nature (what) theory A statement that explains a wide range of observations, supported by a large body of scientific evidence (how/why) meter Base unit of length kilogram Base unit of mass second Base unit of time kelvin Base unit of temperature Derived units What is produced when the base units/quantities are combined Speed The name for the distance traveled divided by an interval of time Volume Term for the amount of space an object occupies Liquid displacement Method of determining the volume of an object by measuring the amount of liquid it displaces direct relationship A relationship between two variables where increasing one increases the other, and vice versa inverse relationship A relationship between two variables where increasing one decreases the other, and vice versa Velocity A combination of speed and direction Acceleration Term for any change in an object's speed and/or direction Force Term for a push or a pull with direction and magnitude. You may not feel it. Net force The sum of all forces acting on an object balanced forces Term for forces that combine to produce a net force of 0 Newton's first law An object in motion remains in motion unless acted on by a net force inertia The tenancy to keep the same motion/velocity or remain at rest. Newton's first law Newton's second law Net force = mass x acceleration (F = ma) Newton's third law When one object exerts a force on a second object, the second object exerts a force of the same magnitude in the opposite direction on the first object ("For every action, an equal and opposite reaction") friction The force that opposes the motion of an object on which it acts Kinetic friction Friction between two objects moving against each other Static friction Friction between two objects touching but not moving against each other Fluid resistance Friction when an object moves through a gas or liquid Gravity Attractive force between objects directly proportional to their masses and inversely proportional to the square of their distance Linear momentum Name for the mass of an object times its velocity Law of conservation of momentum Term for the fact that momentum is conserved when two or more objects collide elasticity The amount of bounce an object has after a collision Elastic collision A collision in which the total kinetic energy is conserved Inelastic collision A collision in which the total kinetic energy is not conserved Work Term for the displacement of an object in the direction of an applied force by using/converting energy Energy The capacity to do work or cause change Kinetic energy The energy objects have because they are moving. Increases with mass and velocity potential energy Energy that is stored Formula for work work = force x displacement gravitational potential energy Energy an object has due to its height above the ground. Increases with mass and height. chemical potential energy Energy that is stored in the chemical bonds in a substance elastic potential energy Energy stored in stretched springs, rubber bands, etc. electromagnetic energy Energy carried by electromagnetic waves. Light energy. thermal energy Energy from the motion of atoms and molecules. Depends on mass and temperature Law of conservation of energy Term for the fact that energy cannot be created/destroyed, only transferred/converted oscillation A repetitive motion that occurs around a center point or equilibrium equilibrium A position or state to which an oscillating object eventually returns to wave A repeating and periodic disturbance (oscillation) that travels from one point to another, transferring energy mechanical waves Type of waves that require a medium (air, water, etc.) to travel through, cannot travel through a vaccuum transverse wave Wave where the oscillation is perpendicular to the direction the wave is traveling longitudinal wave Wave where the oscillation occurs along the direction the wave is traveling [Show Less]
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WGU C165 Questions and Answers graded A+ |updated latest 2023
The study of energy and forces of matter Physics The study of the properties of matter and how matter changes; atoms, molecules and their interacti... [Show More] ons to form substances Chemistry the study of the moon, stars, and other objects in space astronomy The scientific study of earth and the universe around it including structure, materials and processes Earth Science The experimental factor that is manipulated; the variable whose effect is being studied. independent variable The measurable effect, outcome, or response in which the research is interested. dependent variable Structures that scientists build to represent something else. Physical Model a verbal or graphical explanation for how a system works or is organized conceptual model A description of a system using mathematical concepts and language like an equation. mathematical model a computer program that models an event or object computer model Only falsifiable statements can be subject to scientific inquiry principle of falsification a statement that is worded so that it is falsifiable, or disprovable, by experimental results falsifiable statement Concise statement that summarizes the results of many observations and experiments Law A well-tested explanation for a wide range of observations or experimental results. scientific theory The theory that the universe originated in a huge explosion that released all matter and energy. Big Bang Theory Sections of the Earth's crust that move due to convection currents. tectonic plates The hypothesis that the continents slowly move across Earth's surface. continental drift International System of units based on the metric system and units derived from the metric system SI system kilogram (kg) SI unit for mass meter (m) SI unit for length seconds (s) SI unit for time Kelvin (K) SI unit for temperature prefix used in the International System to indicate a power of 10 SI prefix centi (c) SI prefix meaning 0.01 milli (m) SI prefix meaning 0.001 kilo (k) SI prefix meaning 1,000 Micro SI prefix meaning .000001 Nano (n) SI prefix meaning .000000001 Mega (M) SI prefix meaning 1,000,000 The distance an object travels per unit of time Speed Amount of space occupied by an object Volume Mass per unit volume Density Mass divided by volume D=m/v Density formula a relationship in which one variable increases with an increase in another variable or vice versa direct relationship a relationship in which one variable decreases when another variable increases and vice versa inverse relationship defined in terms of standards base quantity a physical aspect described by a combination of base quantities derived quantity The speed of an object in a particular direction Velocity Change in velocity divided by the time it takes for the change to occur Acceleration Speeds up Slows down And/or Changes direction Acceleration occurs when an object A push or pull exerted on an object Force Newton (N) SI unit for force The combination of all forces acting on an object net force forces acting on an object that combine and form a net force of zero balanced forces Forces that produce a nonzero net force, which changes an object's motion unbalanced forces (An object continues in uniform motion in a straight line/ at rest unless a resultant force acts.) The net force on an object is the cause of its acceleration Newton's First Law The tendency to keep the same motion- remaining at rest or maintaining the same velocity Inertia The acceleration of an object depends on the mass of the object and the amount of force applied. F=ma Newton's Second Law For every action there is an equal and opposite reaction Newton's Third Law The force that two surfaces exert on each other when they rub against each other Friction The force of friction between two objects that are moving against each other kinetic friction frictional force that prevents two surfaces from sliding past each other static friction A force of attraction between objects that is due to their masses. Gravity mass times velocity linear momentum Momentum is conserved when two or more objects collide. Momentum may transfer but total momentum within the group stays the same Law of conservation of momentum The ability of a material to bounce back after being disturbed Elasticity Force exerted on an object that causes it to move Work The ability to do work or cause change Energy energy of motion kinetic energy Energy that is stored and held in readiness potential energy Force x distance Work formula Joule (J) SI unit for work and energy Energy stored by objects due to their position above Earth's surface. Increases with mass. gravitational potential energy the energy stored in the chemical bonds of a substance chemical potential energy Energy stored by something that can stretch or compress elastic potential energy Energy carried by electromagnetic waves Electromagnetic energy (light energy) The total energy of motion in the particles of a substance thermal energy The rule that energy cannot be created or destroyed only transferred or converted Law of Conservation of Energy the act or state of swinging back and forth with a steady, uninterrupted rhythm Oscillation A state of balance to which an oscillating object eventually returns to after a disturbances is gone Equilibrium waves that require a medium through which to travel mechanical waves A wave that can transfer electric and magnetic energy through the vacuum of space Electromagnetic waves [Show Less]
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Integrated Physical Science C165 WGU Questions Answers 100% Accurate 2023
physics the study of forces, energy, motion Chemistry study of atoms and molecules, their structures, and their interactions to form various subst... [Show More] ances. Earth Science Earth's structure and composition, as well as the processes that change Earth, such as volcanic and seismic activity. astronomy The study of the moon, stars, and other objects in space Science An organized way of gathering and analyzing evidence about the natural world. Precision a measure of how close a series of measurements are to one another SI is a scientific method of expressing the magnitudes or quantities of important natural phenomena. There are seven base units in the system, from which other units are derived. Universal for comparing data. physical science the sciences concerned with the study of inanimate natural objects, including physics, chemistry, astronomy, and related subjects. life science the study of living things controlled experiment An experiment in which only one variable is manipulated at a time. Or a condition that is being held constant independent variable what is being changed dependent variable what is being measured control In an experiment, the standard that is used for comparison Observational experiment or study studies attempt to understand cause-and-effect relationships. However, unlike experiments, the researcher is not able to control (1) how subjects are assigned to groups and/or (2) which treatments each group receives. ... Therefore, a sample survey is an example of an observational study. field study a research investigation carried out in a naturally occurring setting laboratory study Research done in a laboratory Physical Model A physical representation of an object. Prototypes and appearance models are physical models. conceptual model a verbal or graphical explanation for how a system works or is organized mathematical model one or more equations that represent the way a system or process works Hypothesis A testable prediction, often implied by a theory Theory A hypothesis that has been tested with a significant amount of data. Explains why something happened. Law A law in science is a generalized rule to explain a body of observations in the form of a verbal or mathematical statement. Scientific laws (also known as natural laws) imply a cause and effect between the observed elements and must always apply under the same conditions. Explains how it happened not why. Observation Information obtained through the senses. evidence proof Data Facts and statistics collected together for reference or analysis Big Bang Theory Cosmological model that explains the sudden development of the universe through expansion from a hot, dense state. plate tectonics A theory stating that the earth's surface is broken into plates that move. atomic theory a theory that states that all matter is composed of tiny particles called atoms. gram a metric unit of mass equal to one thousandth of a kilogram. meter The meter is the basic unit of length in the SI system of units. ... The previous definition of the meter was one ten-millionth of the distance from the geographic north pole to the equator, measured over the earth's surface in a circle running through Paris, France. second SI base unit for time Celsius Metric unit for measuring temperature; On this scale water freezes at zero and boils at 100. Kelvin The SI base unit of temperature liter Basic unit of volume in the metric system Metric Prefixes Giga, Mega, Kilo, deci, centi, milli, micro, nano derived unit A unit defined by a combination of base units direct relationship a relationship in which one variable increases with an increase in another variable inverse relationship a relationship in which one variable decreases when another variable increases Speed The distance an object travels per unit of time Velocity Speed in a given direction Acceleration the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change distance The length of a path between two points Displacement Distance and direction of an object's change in position from the starting point. Balance force Equal forces acting on one object in opposite direction. These forces then give a 0 net force, causing the object to stay in place. unequal force unbalanced forces cause a change in motion; speed. and/or direction. When two forces act in the same direction on an object, the net force is. equal to the sum of the two forces. When two unequal forces act in opposite directions. net force The combination of all forces acting on an object Newton's First Law An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Mass the amount of matter in an object Inertia The tendency of an object to resist a change in motion Newton's Second Law Force equals mass times acceleration Newton's Third Law For every action there is an equal and opposite reaction Friction A force that opposes motion between two surfaces that are in contact Gravity Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun. gravitational force an attractive force that acts between any two objects Momentum the force or speed with which something moves law of conservation of momentum One of the most powerful laws in physics is the law of momentum conservation. ... For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision. work Force exerted on an object that causes it to move Energy the ability to do work potential energy Energy that is stored and held in readiness kinetic energy the energy an object has due to its motion gravitational potential energy Energy stored by objects due to their position above Earth's surface. chemical potential energy the energy stored in the chemical bonds of a substance elastic potential energy the energy of stretched or compressed objects electrical energy The energy of electric charges electromagnetic energy Electromagnetic energy is a term used to describe all the different kinds of energies released into space by stars such as the Sun. These kinds of energies include some that you will recognize and some that will sound strange thermal energy Heat energy Law of Conservation of Energy the law that states that energy cannot be created or destroyed but can be changed from one form to another wave A disturbance that transfers energy from place to place oscillation the act or state of swinging back and forth with a steady, uninterrupted rhythm Equilibrium A state of balance medium The material through which a wave travels is called a Gases (air), liquids, solids mechanical wave A wave that requires a medium through which to travel electromagnetic waves A form of energy that can move through the vacuum of space. transverse wave A wave that moves the medium in a direction perpendicular to the direction in which the wave travels longitudinal wave A wave in which the vibration of the medium is parallel to the direction the wave travels. Compressed Compression The part of a longitudinal wave where the particles of the medium are close together. expansion an increase in the volume of a substance while its mass remains the same. Expansion is usually due to heating. When substances are heated, the molecular bonds between their particles are weakened, and the particles move faster, causing the substance to expand. Rarefaction The part of a longitudinal wave where the particles of the medium are far apart Wavelength The distance between two corresponding parts of a wave Frequency the number of complete wavelengths that pass a point in a given time Amplitude the height of a wave's crest or how intense Crest Highest point of a wave (peak) Trough lowest point of a wavelength Period of a wave Time for one complete waveform to travel electromagnetic spectrum All of the frequencies or wavelengths of electromagnetic radiation radio waves Electromagnetic waves with the longest wavelengths and lowest frequencies microwave very short electromagnetic wave; microwave oven (oven that cooks quickly by using microwaves) Infrared Electromagnetic waves of frequencies lower than the red of visible light. visable light portion of the electromagnetic spectrum that is visible to the human eye. ultraviolet light Electromagnetic radiation of several wavelengths is used to control microbial growth X-ray A form of energy that travels in waves that can pass through some living tissue, but not through bone. gamma rays Electromagnetic waves with the shortest wavelengths and highest frequencies pitch a tone's experienced highness or lowness; depends on frequency Loudness A physical response to the intensity of sound, modified by physical factors Matter Anything that has mass and takes up space Atom Basic unit of matter Protron partical that carries a positive charge Neutron A small particle in the nucleus of the atom, with no electrical charge [Show Less]
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C165- Earth and Sky Quiz Questions Answered 100% Accurate, Scored A+
What force caused the hydrogen, helium, and lithium formed from the big bang to collect and form stars, planets, and other objects, as well as to form the ... [Show More] different elements than hydrogen making up these objects? magnetism gravity chemical bonds inertia gravity What process generates the energy that stars emit? chemical reaction of hydrogen and oxygen to form water vapor- wrong fission of uranium or other large nuclei to form smaller nuclei fusion of hydrogen or other small nuclei to form larger nuclei gravitational acceleration of matter to convert potential energy to kinetic energy- wrong fusion of hydrogen or other small nuclei to form larger nuclei Which of these effects is NOT caused by gravity? a planet's atmosphere retaining thermal energy solar systems being held together to form a galaxy planets orbiting a star hydrogen gas condensing to form a star a planet's atmosphere retaining thermal energy Which of these properties characterize the outer planets compared to the inner planets? gaseous and less dense smaller size made of high density material a shorter year (shorter amount of time to go around the sun) gaseous and less dense Which kind of object found in our solar system BEST fits each description? Description Object extremely small rocky body usually in the inner solar system spherical object orbiting a planet objects from the Kuiper belt or Oort cloud, made of ice and dust one of the eight large objects orbiting the sun that are large enough to become spherical from their own gravity, and to have cleared their orbit of other major objects asteroid, moon, comets, planet Which of these is MOST likely to be happening when Earth is closest to the sun during the year? Fourth of July fireworks in New York.- wrong Tree leaves turning autumn brown In Vermont. A snowy New Year's Eve in Boston. A spring festival in Washington D.C. A snowy New Year's Eve in Boston. When it is winter in New York City, what season is it in New Zealand, which is in Earth's southern hemisphere? summer winter fall spring summer Drag the label to the correct location to mark each part of Earth's interior. inner core, outer core, mantle , crust The hottest part of Earth's interior is its __________. inner core crust outer core mantle inner core A meander in a river develops primarily from __________. roughly equal deposition on both sides of the river roughly equal erosion on both sides of the river erosion on the side of the river where the flow is slower and deposition on the opposite side erosion on the side of the river where the flow is faster and deposition on the opposite side erosion on the side of the river where the flow is faster and deposition on the opposite side Many cycles of water getting into this rock and expanding by freezing have produced large cracks. This is an example of __________. Image of red quartz embedded in granite. chemical weathering deposition erosion physical weathering physical weathering Some large rivers such as the Mississippi form a delta where they meet the ocean, with land forming that extends into the sea. The formation of a delta is the result of __________ upstream where the flow is more energetic and __________ where the flow is less rapid. erosion, deposition Which of these statements about glaciers is the MOST accurate? Glaciers remain fixed permanently in position. Glaciers flow and reshape their surroundings only by erosion and weathering. Glaciers flow and reshape their surroundings by erosion, weathering, and deposition. Glaciers flow and reshape their surroundings but only by erosion. Glaciers flow and reshape their surroundings by erosion, weathering, and deposition. What conditions are needed for a sand dune to form? lots of loose sand, an obstacle, wind wet sandy soil held in place by vegetation, wind lots of loose sand, vegetation, flowing water sand on a hill so that it is pulled down by gravity lots of loose sand, an obstacle, wind Which of these is an example of a mineral? calcite (composed of calcium carbonate) granite (composed of quartz and feldspar) basalt (made of various silicon compounds) petroleum (composed of hydrocarbon compounds) calcite (composed of calcium carbonate) The correct chronological order of these events in Earth's history was: first - not humans then - no dinos then - not fish then - not birds . evolution of fish, evolution of birds, evolution & extinction of dinos, humans A geologist notices that 4 layers of rock are stacked directly on top of each other. He labels the top layer as #1 and the bottom layer as #4. Which layer is the oldest? #4 #3 #2 #1 #4 Which of these statements about fossils is correct? The fossil record is incomplete because most organisms simply die and decay. If an organism ever lived, it left a fossil, but different fossils often look the same. If an organism ever lived, it left a fossil, but it may be hard to find. Scientists have found fossils of most organisms that ever lived on Earth. The fossil record is incomplete because most organisms simply die and decay. What does the term "Pangaea" refer to? the ocean floors and their various undersea mountains the landmass that all of Earth's continents were once joined together to form a continent that sank in the Atlantic Ocean in ancient times the continent that the Antarctic is located on the landmass that all of Earth's continents were once joined together to form Which kind of plate boundary occurs where the plates slide past each other? transform subducting diverging converging transform Which of these are the two MOST abundant gases in our atmosphere? Oxygen and water vapor Nitrogen and carbon dioxide Nitrogen and oxygen Oxygen and carbon dioxide Nitrogen and oxygen As height above sea level increases, the air pressure in our atmosphere ________, and the density of the air _________ . decreases, *not increases In which layer of Earth's atmosphere do storms and other weather phenomena occur? mesosphere stratosphere exosphere troposphere troposphere The atmospheric pressure meteorologists refer to in speaking of weather is __________. the difference in force from the air on opposite sides of a surface- Wrong the total force from the air acting on the area of interest- wrong the force from the air divided by the area on which it acts the weight of a cubic meter of air at sea level the force from the air divided by the area on which it acts The trade winds are prevailing winds that blow over long distances. Their paths curve to the right in the northern hemisphere and to the left in the southern hemisphere. Which process causes their paths to curve? Earth spinning on its axis Earth orbiting the sun gravity from the moon gravity from the sun Earth spinning on its axis What causes wind? air moving from low to high pressure areas that result mainly from Earth's spin around its axis Earth's motion around the sun causing Coriolis forces air moving from high to low pressure areas that result mainly from unequal heating gravity from the moon and sun acting on the air air moving from high to low pressure areas that result mainly from unequal heating A hydroelectric power plant converts the energy from flowing water in rivers into electric power. Where does the energy that converts originate? gravity in changing potential energy of the water into kinetic energy- wrong Earth's interior by heating water tides by causing water levels to rise- wrong the sun by causing evaporation fossil fuels in the generating plant- wrong the sun by causing evaporation [Show Less]
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WGU Integrated Physical Sciences C165 – PA Questions and Answers 100% correct 2023
A mathematical model is used to predict the trajectory of a bullet fired from a gun. Which discipline of physical science is used to develop this model?... [Show More] Physics Chemistry Earth science Astronomy Physics An environmental scientist monitors pollutants in a lake. Which two disciplines of physical science does this scientist use? Choose 2 answers Astronomy Chemistry Earth science Physics Chemistry & Earth Science Which study involves both Earth science and physics? Calculating how much energy is associated with a hurricane Measuring the energy produced by a generator Comparing the composition of crude oil from different regions Monitoring changes in phosphorus levels of a lake Calculating how much energy is associated with a hurricane Which question could be answered with a controlled experiment? Does ice melt faster in an empty glass or in a glass full of water? Do all planets have the same shape of orbit around the sun? What is the maximum distance between Earth and Jupiter? What is the length of the longest river in North America? Does ice melt faster in an empty glass or in a glass full of water? Which topic would be appropriate for a controlled experiment? Determining how fast different chemical pollutants dissolve in water Comparing the elements present in different stars Measuring how fast a river flows Predicting the path of a tornado Determining how fast different chemical pollutants dissolve in water Which question requires a controlled experiment to answer? Which type of rock contains the most calcium? Which planet has the most moons? Which elements are found in Earth's atmosphere? Which fossils formed earliest in Earth's history? Which type of rock contains the most calcium? Sir Isaac Newton discovered that the force of gravity between two masses increases if the masses increase, and decreases if the distance between the masses increases. No experiments have ever contradicted this relationship. Which type of scientific statement is this? Hypothesis Theory Law Prediction Law The well-accepted scientific explanation for many characteristics of Earth's crust states that the crust is broken into several large plates. These plates move slowly over the mantle below because of convection and other processes. Earthquakes and volcanoes are most common at places where the plates interact. Evidence from physics, chemistry, and geology supports this explanation. Which type of scientific idea is this explanation an example of? Hypothesis Theory Law Prediction Theory A student proposes that sugar will dissolve faster in rubbing alcohol than in water. The student reasons that sugar and rubbing alcohol both contain carbon so they will mix more easily. Which type of scientific idea is the student's proposal an example of? Hypothesis Theory Law Observation Hypothesis Why was the shrinking Earth idea replaced by the theory of plate tectonics? Plate tectonics was a new theory, which made it more reliable. Plate tectonics explained observations about Earth that the shrinking Earth idea could not explain. Geologists voted on which theory to accept, and chose plate tectonics. Many well-known geologists were involved in proposing plate tectonics. Plate tectonics explained observations about Earth that the shrinking Earth idea could not explain. Astronomers have long accepted that plate tectonics exists nowhere in our solar system except on Earth. In 2011, a scientist analyzed 100 NASA-space-mission photographs of Valles Marineris on Mars, the longest known series of canyons in the solar system. The scientist found that Valles Marineris showed features found only in locations on Earth where major tectonic plates divide. What would be the appropriate response of scientists to this information? Reject plate tectonics on Mars as the explanation because it contradicts accepted science Decide whether to accept plate tectonics on Mars based on the reputation of scientists involved Hold public debates among scientists and then vote whether plate tectonics occurs on Mars Carry out further research to gain more understanding of possible plate tectonics on Mars Carry out further research to gain more understanding of possible plate tectonics on Mars According to the theory of plate tectonics, volcanoes are especially likely to form along plate boundaries because of rising magma. New satellite data mapping the ocean floor reveals thousands of seamounts, which are small volcanoes. Some of the seamounts are in lines that could correspond to past or present plate boundaries, but many are not aligned in this way. How should scientists appropriately respond to the idea that some new mechanism of forming the volcanoes is involved? Reject it because it contradicts the theory of plate tectonics Accept it if the person proposing it is a credible expert on plate tectonics. Carry out more research to understand better how the seamounts form Stage public debates to get a consensus on how the seamounts form Carry out more research to understand better how the seamounts form For many decades, scientists thought they understood how ozone breaks down in the stratosphere, creating ozone holes. However, new data show significantly lower reaction rates than can be explained by the long-held model. What is the appropriate scientific approach for dealing with this contradiction? Conduct additional experiments to confirm the new data Ignore the new data because it contradicts the accepted model Ask the general public to vote on which data are correct Accept whichever data the most famous scientists support Conduct additional experiments to confirm the new data For almost 1500 years most scientists in Europe accepted Ptolemy's geocentric planetary model that suggested the sun revolved around Earth. By the eighteenth century, most scientists supported a heliocentric model that suggests that Earth revolves around the sun. What is an appropriate scientific basis for this change in view? The most prominent scientist that supported the geocentric model died The existing theory was changed to account for new data The old theory was voted down by a scientific council The heliocentric model was supported by a popular scientist The existing theory was changed to account for new data A woman does pushups by lowering her body to the floor using her arms and then pressing against the floor with her hands to push herself back up. Which force causes her to rise? The downward force of gravity that Earth exerts on the woman The downward force that the woman's arms exert on the ground The upward force that the ground exerts on the woman The upward force that the woman's arms exert on the ground The upward force that the ground exerts on the woman Two boxes sitting on the floor look identical, but one has more mass than the other. What happens when the same net force, sufficient to overcome static friction, is applied to each box? The box with less mass accelerates more. The box with more mass accelerates more. Both boxes accelerate at the same rate. Both boxes remain at rest. The box with less mass accelerates more. Two identical train engines are parked on parallel tracks. One engine has ten cars attached, and the other has no cars attached. Each engine exerts the same net force, which allows the train to overcome static friction. Which engine will be able to accelerate more? The engine not pulling any cars will accelerate more. The engine pulling ten cars will accelerate more. Both engines will accelerate at the same rate. Both engines will remain at rest. The engine not pulling any cars will accelerate more. A woman applies an upward force to a basket filled with groceries. Assume she is standing still. What will happen to the basket if the force she applies is greater than the force of gravity? The basket will move sideways. The basket will remain at the same height. The basket will move up. The basket will move down. The basket will move up. A heavy truck and a light car travel at the same velocity side-by-side on the highway. Both drivers apply the same braking force at the same moment. What will happen to the two vehicles? The car will slow down more quickly than the truck. The truck will slow down more quickly than the car. Both vehicles will slow down at the same rate. The car will slow down but the truck will continue at the same speed. The car will slow down more quickly than the truck. Which force causes graphite from the tip of a pencil to transfer to the paper? Friction Gravity Air Resistance Tension Friction Which force keeps Jupiter in orbit around the Sun? Air resistance Gravity Kinetic friction Magnetism Gravity Which force causes a jet airplane to stop on a runway? Friction Gravity Tension Centripetal Force Friction Which force causes meteors to burn up when they enter Earth's atmosphere? Friction Gravity Magnetism Tension Friction A slingshot is a Y-shaped stick with rubber bands between the prongs for shooting stones and other small projectiles. A stone is shot by first placing it in the slingshot holder, which is attached to the rubber bands. The stone and holder are then pulled back, stretching the rubber bands. When released, the stone is propelled forward and leaves the slingshot at a high speed. Which type of energy transformation occurs from the point when the rubber bands are fully stretched to when the stone leaves the slingshot? Chemical potential energy is converted into gravitational potential energy. Gravitational potential energy is converted into thermal energy. Chemical potential energy is converted into gravitational potential energy. Elastic potential energy is converted into kinetic energy. Elastic potential energy is converted into kinetic energy. Which type of energy conversion occurs at the moment fireworks explode? Elastic potential energy is converted into thermal energy. Gravitational potential energy is converted into thermal energy. Chemical potential energy is converted into kinetic energy. Elastic potential energy is converted into gravitational potential energy.. Chemical potential energy is converted into kinetic energy. What energy conversion takes place as a box slides to a stop on a horizontal table? Kinetic energy is converted into thermal energy. Gravitational potential energy is converted into kinetic energy. Chemical potential energy is converted into gravitational potential energy. Elastic potential energy is converted into gravitational potential energy. Kinetic energy is converted into thermal energy. What energy conversion occurs in a car's engine? Kinetic energy is converted into elastic potential energy. Gravitational potential energy is converted into electrical potential energy. Chemical potential energy is converted into thermal energy. Thermal energy is converted into gravitational potential energy. Chemical potential energy is converted into thermal energy. Which kind of electromagnetic radiation carries information to and from a cell phone when it is used for a phone call? Microwaves X-rays Infrared radiation Ultraviolet radiation Microwaves A cashier who has been handed a hundred-dollar bill may check its authenticity by holding it under a special lamp that emits electromagnetic radiation mostly at wavelengths slightly shorter than visible light. The electromagnetic radiation makes a pattern of previously invisible markings on the bill glow brightly, or fluoresce. Which kind of electromagnetic radiation does the lamp emit to produce this effect? Microwaves Infrared radiation Ultraviolet radiation X-rays Ultraviolet radiation After natural disasters, first responders can locate survivors in the rubble by using thermal detectors. Because the victims' bodies are warmer than their surroundings, the difference in temperature is detected by electromagnetic waves. Which part of the electromagnetic spectrum is being detected? Radio waves Infrared radiation Ultraviolet radiation X-rays Infrared radiation Airport security uses electromagnetic radiation to form images of objects inside passenger luggage. Which type of electromagnetic radiation is used in this way? Radio waves Visible light Ultraviolet radiation X-rays X-rays Which type of wave has a longitudinal motion? Gamma waves Transverse waves Sound waves Light waves Sound waves Which is a characteristic of electromagnetic waves? Transverse wave motion Travels faster through water than air Longitudinal wave motion Can travel only through a vacuum Transverse wave motion Which subatomic particle is located outside the nucleus? Proton Neutron Electron Ion Electron What charge does a neutron have? Positive charge Negative charge No charge Variable charge No charge A chocolate chip cookie is made with dough and chocolate chips. Which type of substance is a chocolate chip cookie? Element Compound Mixture Mineral Mixture Which example describes a compound? A substance with only iron atoms A substance with sodium atoms bonded to chlorine atoms A substance with fluorine and nitrogen atoms that are not bonded together A substance with iron and aluminum atoms that are not bonded to each other A substance with sodium atoms bonded to chlorine atoms In which state of matter are particles close together, but able to slide past one another? Liquid Solid Plasma Gas Liquid Which action demonstrates a chemical change? Cooking an egg Shredding paper Evaporating water Breaking a stick Cooking an egg Which type of bond is formed when valence electrons are shared between two atoms? Ionic Mechanical Covalent Metallic Covalent Which properties will elements in group 2 share, based on location in the periodic table? Choose 2 answers Good thermal conductivity Good electrical conductivity Poor thermal conductivity Poor electrical conductivity Good thermal conductivity & Good electrical conductivity [Show Less]
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C165 Integrated Physical Science - Section 1 Test Questions and Answers 2023
Iron ore consists mainly of iron atoms and oxygen atoms joined to each other to form several different possible forms of iron oxide. Which branch of physic... [Show More] al science MOST directly deals with developing ways to remove the oxygen from iron oxide, thus leaving iron metal? Chemistry Which field of physical science deals MOST directly with which atoms join together to form molecules? Chemistry Iron ore consists mainly of iron atoms and oxygen atoms joined to each other to form iron oxide. Which branch of physical science MOST directly deals with determining the kinds of rock formations likely to contain iron ore? Earth science Which field of physical science MOST directly explains how the motion of the continents over 100 million years led to mountains and volcanoes in some places above land and deep ocean trenches in other places beneath the ocean surface? Earth science Satellites orbiting Earth scan the light reflected from below, and the data can then be analyzed to get information about the objects that reflected the light. This technology is called “remote sensing.” For example, they can even distinguish between Astroturf in a football field and real grass on the ground below, even though these look the same to the human eye. Which field of science would MOST directly devise ways to detect and analyze reflected light obtained by remote sensing? Physics A scientist sets out to test his hypothesis that warmer sand temperatures during the incubation of turtle eggs produce female hatchlings and cooler sand temperatures produce males. The independent variable is the temperature. The variable that a scientist changes in an experiment is called the independent variable. Which term BEST describes a research project in which scientists place microphones at the bottom of the seafloor to study the sounds orca whales make? A field study The Hubble space telescope was launched into orbit to take far sharper images than possible on Earth. It has since collected data that show some distant stars to have planets. The scientific investigation involved is BEST described as an observational study Which field relies the MOST on laboratory studies? Chemistry Many species of fish contain a swim bladder within their body that is filled with gas and helps the fish to control and maintain their depth below the water. Which fields of science MOST directly explain the operation and evolution of the swim bladder of fish? Physics and life science A class carries out an experiment in which they allow the weight of the block with mass m2 to pull block m1 into motion, and then they measure the speed attained each time the hanging mass reaches the ground. They repeat this for different masses m2. The independent variable is the mass m2. Which topic dealt with by physics would be the MOST DIRECTLY important in life science? How drag forces influence the motion of bacteria as they swim through water When the electric eel needs electricity, its complex system of nerves simultaneously activates thousands of electricity-producing cells. As each cell receives the signal, it releases a tiny amount of the molecule called AChE. The study of the properties and interactions of AChE would be in the realm of chemistry. Ocean tides are caused by the force of gravity mainly from the moon and secondarily from the sun as Earth rotates on its axis. Which pair of physical sciences MOST directly deals with the tides and what causes them? Physics and Earth science Geckos are known for being able to walk on very smooth surfaces, even upside down. Tiny ridges on the gecko's feet allow it to stick to a smooth glass surface because of weak forces between the atoms in the gecko's foot and the atoms in the glass. Which pair of physical sciences would be MOST relevant in investigating how a gecko sticks to glass? Physics and chemistry Which physical science MOST directly deals with the fundamental nature of time, space, energy, forces, and motion of matter? Physics The statement, "The total energy in a closed system stays constant,” is based on many years of experimental observations. The statement is an example of a law A scientific procedure done in order to test a hypothesis is an experiment. At a scientific conference, a researcher suggests that fossil fuels did not originate from the decomposition of organic materials but instead were produced by inorganic means. What does this statement represent? Hypothesis While on a hiking trip, several children become sick after drinking water from a well. What is a hypothesis concerning this situation? Bacteria in the well may have caused the sickness. How does a hypothesis compare with a law? A law is supported by extensive evidence, but a hypothesis has not been tested enough to be supported by extensive evidence yet. A scientific theory is discarded if it is contradicted by new experiments or observations. Theories help scientists explain large amounts of data. Which model can be touched? Physical Medical researchers want to be able to classify samples of cells by shape rapidly from the way light shining on the cells from a laser is scattered into different directions. Why might they run a computer program to calculate the scattering from different tiny egg-shaped particles for different lengths and widths instead of doing the tests on real cells? The length, width, and height of the model cells can be adjusted more easily than with real cells. [Show Less]
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C165 Integrated Physical Sciences Pre-Assessment Questions Answered 100% 2023
A mathematical model is used to predict the trajectory of a bullet fired from a gun. Which discipline of physical science is used to develop this model?... [Show More] Physics An environmental scientist monitors pollutants in a lake. Which two disciplines of physical science does this scientist use? Choose 2 answers 1. Chemistry 2. Earth science Which study involves both Earth science and physics? Calculating how much energy is associated with a hurricane Which question could be answered with a controlled experiment? Does ice melt faster in an empty glass or in a glass full of water? Which topic would be appropriate for a controlled experiment? Determining how fast different chemical pollutants dissolve in water Which question requires a controlled experiment to answer? Which elements are found in Earth's atmosphere? Sir Isaac Newton discovered that the force of gravity between two masses increases if the masses increase, and decreases if the distance between the masses increases. No experiments have ever contradicted this relationship. Which type of scientific statement is this? Law The well-accepted scientific explanation for many characteristics of Earth's crust states that the crust is broken into several large plates. These plates move slowly over the mantle below because of convection and other processes. Earthquakes and volcanoes are most common at places where the plates interact. Evidence from physics, chemistry, and geology supports this explanation. Which type of scientific idea is this explanation an example of? Theory A student proposes that sugar will dissolve faster in rubbing alcohol than in water. The student reasons that sugar and rubbing alcohol both contain carbon so they will mix more easily. Which type of scientific idea is the student's proposal an example of? Hypothesis Why was the shrinking Earth idea replaced by the theory of plate tectonics? Plate tectonics explained observations about Earth that the shrinking Earth idea could not explain. Astronomers have long accepted that plate tectonics exists nowhere in our solar system except on Earth. In 2011, a scientist analyzed 100 NASA-space-mission photographs of Valles Marineris on Mars, the longest known series of canyons in the solar system. The scientist found that Valles Marineris showed features found only in locations on Earth where major tectonic plates divide. What would be the appropriate response of scientists to this information? Carry out further research to gain more understanding of possible plate tectonics on Mars According to the theory of plate tectonics, volcanoes are especially likely to form along plate boundaries because of rising magma. New satellite data mapping the ocean floor reveals thousands of seamounts, which are small volcanoes. Some of the seamounts are in lines that could correspond to past or present plate boundaries, but many are not aligned in this way. How should scientists appropriately respond to the idea that some new mechanism of forming the volcanoes is involved? Carry out more research to understand better how the seamounts form For many decades, scientists thought they understood how ozone breaks down in the stratosphere, creating ozone holes. However, new data show significantly lower reaction rates than can be explained by the long-held model. What is the appropriate scientific approach for dealing with this contradiction? Conduct additional experiments to confirm the new data For almost 1500 years most scientists in Europe accepted Ptolemy's geocentric planetary model that suggested the sun revolved around Earth. By the eighteenth century, most scientists supported a heliocentric model that suggests that Earth revolves around the sun. What is an appropriate scientific basis for this change in view? The existing theory was changed to account for new data A woman does pushups by lowering her body to the floor using her arms and then pressing against the floor with her hands to push herself back up. A woman is in a typical prone, plank position doing a push-up. She is looking at the floor. Her toes are contacting the floor with her feet perpendicular to the floor. Her hands are flat on the floor with wrists bent so that her forearms are perpendicular to the floor and elbows bent so that her upper arms are parallel to the floor. Which force causes her to rise? The upward force that the ground exerts on the woman Two boxes sitting on the floor look identical, but one has more mass than the other. What happens when the same net force, sufficient to overcome static friction, is applied to each box? The box with less mass accelerates more Two identical train engines are parked on parallel tracks. One engine has ten cars attached, and the other has no cars attached. Each engine exerts the same net force, which allows the train to overcome static friction. Which engine will be able to accelerate more? The engine not pulling any cars will accelerate more A woman applies an upward force to a basket filled with groceries. Assume she is standing still. What will happen to the basket if the force she applies is greater than the force of gravity? The basket will move up A heavy truck and a light car travel at the same velocity side-by-side on the highway. Both drivers apply the same braking force at the same moment. What will happen to the two vehicles? The car will slow down more quickly than the truck Which force causes graphite from the tip of a pencil to transfer to the paper? Friction Which force keeps Jupiter in orbit around the Sun? Gravity Which force causes a jet airplane to stop on a runway? Friction Which force causes meteors to burn up when they enter Earth's atmosphere? Friction A slingshot is a Y-shaped stick with rubber bands between the prongs for shooting stones and other small projectiles. A stone is shot by first placing it in the slingshot holder, which is attached to the rubber bands. The stone and holder are then pulled back, stretching the rubber bands. When released, the stone is propelled forward and leaves the slingshot at a high speed. Which type of energy transformation occurs from the point when the rubber bands are fully stretched to when the stone leaves the slingshot? Elastic potential energy is converted into kinetic energy Which type of energy conversion occurs at the moment fireworks explode? Chemical potential energy is converted into kinetic energy What energy conversion takes place as a box slides to a stop on a horizontal table? Kinetic energy is converted into thermal energy What energy conversion occurs in a car's engine? Chemical potential energy is converted into thermal energy Which kind of electromagnetic radiation carries information to and from a cell phone when it is used for a phone call? Microwaves A cashier who has been handed a hundred-dollar bill may check its authenticity by holding it under a special lamp that emits electromagnetic radiation mostly at wavelengths slightly shorter than visible light. The electromagnetic radiation makes a pattern of previously invisible markings on the bill glow brightly, or fluoresce. Which kind of electromagnetic radiation does the lamp emit to produce this effect? Ultraviolet radiation After natural disasters, first responders can locate survivors in the rubble by using thermal detectors. Because the victims' bodies are warmer than their surroundings, the difference in temperature is detected by electromagnetic waves. Which part of the electromagnetic spectrum is being detected? Infrared radiation Airport security uses electromagnetic radiation to form images of objects inside passenger luggage. Which type of electromagnetic radiation is used in this way? X-rays Which type of wave has a longitudinal motion? Sound waves Which is a characteristic of electromagnetic waves? Transverse wave motion Which subatomic particle is located outside the nucleus? Electron What charge does a neutron have? No charge A chocolate chip cookie is made with dough and chocolate chips. Which type of substance is a chocolate chip cookie? Mixture Which example describes a compound? A substance with sodium atoms bonded to chlorine atoms In which state of matter are particles close together, but able to slide past one another? Liquid Which change of state does the image show? Solid to liquid Which action demonstrates a chemical change? Cooking an egg Which type of bond is formed when valence electrons are shared between two atoms? Covalent [Show Less]
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Integrated Physical Sciences - WGU C165 Questions and Answers 2023
The details of how moving water flowing around an object such as a pebble can exert enough force to lift it and carry it. physics The detailed mech... [Show More] anisms by which acidic pollutants in the river water change limestone, which does not dissolve, into partially soluble material, causing a large rock to weather? chemistry The effect of weathering and erosion on features of the landscape over long periods of time. Earth Science Comparison of the fin structures and their use in different species of fish. life science behavior of energy and matter physics how atoms and molecules interact chemistry Earth and its various parts and processes Earth Science living systems, and their interactions with their surroundings and each other life science "Because of the way Earth's axis is tilted, there is less direct sunlight per day in the winter and temperatures drop" is mainly a statement about: Earth Science "When water freezes the water molecules join weakly in a specific way" is mainly a statement about: chemistry "Being less dense than liquid water makes the ice float." is mainly a statement about: physics "The river freezes on its surface first" is mainly a statement about: Earth Science An experiment in which you deliberately change only one variable, and observe how a second variable changes as a result, while you hold all other variables that you control constant, is a: controlled experiment The variable that you adjust is called the________ variable independent This is an example of employing a ______________ of the river model If the students decide to collect data from the computer simulation on how the speed of the water changes for different widths, but neglect to hold the rate of water entering from the source at the same value, they are simulating a(n) _______________ experiment. uncontrolled If the students keep the rate of water entering the pipe at one gallon per minute in the simulation to see the speed of the water change as the width of the pipe is changed, the independent variable is ____________ pipe width If the students keep the rate of water entering the pipe at one gallon per minute in the simulation to see the speed of the water change as the width of the pipe is changed, the independent variable is pipe width and the the dependent variable is ___________________ water speed After hearing about the research, one of the students in the class asks the professor "Which is the nicest river in America?" Why can't research in Earth science answer the simple question? there is no falsifiable answer A model in science is a simpler system that is analogous to the real system. A team member notices that the winds blowing persistently from the west over a mountain tend to produce rain on the western side of the mountain but much less rain on the eastern side. observation Based on knowing that temperatures tend to decrease with increasing height, the team proposes that maybe the moist air is being cooled when the wind from west to east forces the air upward. formulating a hypothesis The team tests this idea in the laboratory by measuring the temperature inside a cylinder with a movable piston so they can change the pressure of the air, simulating moving to the air to greater height. using a model Based on extensive research results on prevailing winds, and how air cools when it is uplifted by winds over a mountain, the team develops a widely applicable explanation of rainfall and snowfall around mountains. constructing a scientific explanation The origin of water on Earth is not yet fully understood. To test one of the hypotheses, scientists launched a gigantic observational balloon to the height of almost 130,000 feet to measure the amounts of water in comets and asteroids based on the light reflected from these objects. The science BEST SUITED to calculating the forces required to launch the balloon to the required altitude is______ physics Which physical science is the BEST to study the composition of Earth's atmosphere? Earth Science Which physics topic would be the MOST important in chemistry? how atoms bond to each other because of electric attraction of oppositely charged electrons and nuclei The science BEST for studying photosynthetic bacteria is life science A space probe is an unmanned spacecraft. Which of these terms BEST describes a research project in which a space probe is sent to collect soil samples on planet Mars and then report the data back to Earth? a field study Which of these terms BEST describes a research project in which a big telescope is placed on a high mountain in Arizona to study the brightness stability of the sun? an observational study Which of these fields depends the MOST on observational studies? ... The kinetic theory of gases is based on the assumption that the molecules that form the gas are in random motion and bounce off the walls of their container and off each other as if they were billiard balls. The forces between real molecules are more complicated. This is an example of using a model Why can't astronomers carry out a scientific research study to determine which visible star, other than our sun, is the nicest? There is no way to prove any answer wrong. In 1811, physicist Amedo Avogadro proposed that the same volume of two different gases at the same temperature and pressure contain the same number of molecules. His proposal received little attention until the 1850s, when chemist Stanislao Cannizzaro, in particular, argued that Avogadro's idea agreed with all the physical and chemical laws discovered up to that time. Today, Avogadro's statement about gases is sometimes referred to as "Avogadro's hypothesis" or "Avogadro's law." Which statement describes when each of those two terms would be MOST accurately applied? It is most accurately described as a hypothesis starting in 1811, but a law after the 1850's. Which of these describes a statement that has usually NOT yet been tested? a hypothesis It is often said that you can never prove a scientific theory right. Why? It is impossible to directly test every single instance in which it applies. Which of these is generally regarded by scientists to be the basis for deciding issues in science? empirical evidence including experiments and observations Which of the following describes how scientific investigations are carried out? Scientists use different procedures but rely on evidence and testing to confirm their ideas. Different explanations for the origin of the universe were favored at different times. The static model stated that the universe always existed as it is now. Another explanation was the steady state model that the universe has no beginning and matter is being created to fill in as the universe expands. The third was the big bang model. What led scientists to settle on the big bang explanation that the universe began from a tiny point? Evidence was found such as the leftover radiation from the big bang and the correct fractions of certain kinds of atoms. A team of scientists wants to investigate whether objects slide on sand with less friction if the sand is wet. Suppose they have not yet carried out any experiments. The statement they are investigating, that the friction of sliding on sand is reduced if the sand is wet, is an example of a(n) hypothesis Galileo found that when air resistance can be ignored, heavier and lighter objects fall in the same way. He tested this rule and confirmed it was consistent with all available data. The rule Galileo found can BEST be described as a ... In what sense was Rutherford's planetary model of the atom a model? It represented the atom in terms of a more familiar system to which it was analogous. Which of these fields depends the MOST on field studies? Earth Science When a candle burns, its molecules consisting of hydrogen and carbon atoms combine with oxygen to produce carbon dioxide and water. The physical science that is BEST for dealing with the changes of the paraffin into carbon dioxide and water is chemistry The observational balloon is filled with helium and vented to the atmosphere. The height it reaches depends on the changes of the atmospheric pressure during the day and night cycle. The science BEST for studying this daily warming and cooling of the atmosphere is Earth Science The sun produces its energy by nuclear fusion reactions, in which smaller nuclei are combined to produce larger nuclei. Forces responsible for the nuclear fusion are called nuclear forces. The physical science that studies nuclear forces is physics Some students carry out an experiment in which they tilt a wooden plank by propping up one end with books, so that its height is a distance h above the table. The students release a steel ball bearing at different positions along the ramp measured as x. Each time they do this for a different value of x, they measure the speed of the ball bearing at the end of the ramp. In this experiment, the independent variable is: x Some students carry out an experiment in which they tilt a wooden plank by propping up one end with books, so that its height is a distance h above the table. The students release a steel ball bearing at different positions along the ramp measured as x. Each time they do this for a different value of x, they measure the speed of the ball bearing at the end of the ramp. The dependent variable is: speed Some students carry out an experiment in which they tilt a wooden plank by propping up one end with books, so that its height is a distance h above the table. The students release a steel ball bearing at different positions along the ramp measured as x. Each time they do this for a different value of x, they measure the speed of the ball bearing at the end of the ramp. The control variable that is: h When the soccer ball falls, it is accelerated toward Earth while Earth does not move noticeably in response. The soccer ball accelerates more because its mass is small compared to Earth's mass. A bumper car at an amusement park bumps into the back of another. The car in front moves faster as a result of the collision, and the car behind it is slowed by the collision. The cars have unequal mass. Which car experiences the greater force during the collision? Each car experience a force of the same magnitude. A cargo spacecraft that brings supplies to the International Space Station (ISS) is launched using rocket propulsion. The spacecraft's rockets fire hot gases backwards. Which of the following statements is true about this situation according to Newton's third law? When the rockets fire hot gases backwards, this creates huge forces in the opposite direction, exerted on the spacecraft by the hot gases. A parachute is deployed to slow down a sky diver as he descends toward the ground. What happens while he is descending? His velocity points downward and his acceleration points upward. As a cargo spacecraft lifts off, its booster rockets are employed to accelerate it. Assume that the booster rockets apply a constant force on the spacecraft. The higher the spacecraft ascends, the less mass it has, because some of its fuel is burned. What is happening as the spacecraft is ascending? Both its speed and acceleration increase. Identify which of the following is NOT a correct statement about inertia. An object with less mass has more inertia. [Show Less]
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Integrated Physical Science Module 6 Quiz WGU C165 Questions and Answers 2023
Classify each example as a mechanical wave or an electromagnetic wave. Light from a flashlight. Wave in a rope. A wave in a slinky spring. The signal f... [Show More] rom the button you press on the key fob to lock your car doors remotely. Light from a flashlight - electromagnetic Wave in a rope - mechanical A wave in a slinky spring - mechanical The signal from the button you press on the key fob to lock your car doors remotely - electromagnetic As the end of the coiled spring is moved up and down, what kind of wave travels along the coiled spring? A. Longitudinal wave B. Transverse wave B. Transverse wave The diagram illustrates a wave traveling from left to right. The wavelength on the diagram is the distance from A to ________. A. B B. C C. D D. E B. C Waves A and B both travel at the same speed. If wave A has a frequency of 100Hz ( meaning, 100 per second) then what, approximately, is the frequency of wave B? A. 11 Hz B. 100 Hz C. 50 Hz D. 200 Hz D. 200 Hz The amount of energy a sound wave carries from a loud speaker to a listener's ears depends on its _____________. amplitude How does a sound wave carry energy from a loud speaker to the ear of the listener? A. The pattern of compression travels; the air itself remains in about the same place. B. Air currents move with the sound to carry the vibrating molecules to the listener. C. The vibrating molecules move from the speaker to the ear of the listener. D. There is no long range motion of matter. The wave pattern carries the energy. D. There is no long range motion of matter. The wave pattern carries the energy. A difference in which of the following characteristics distinguishes radio waves from X-rays? A. ability to travel in a vacuum B. amplitude C. wavelength D. speed C. wavelength If an electromagnetic wave's wavelength is equal to the diameter of Earth, what kind of electromagnetic wave is it? A. Gamma rays B. microwave C. X-ray D. radio wave D. radio wave If you are told the wavelength of the light emitted by a laser, what could you infer about that light? A. its intensity B. its color C. its amplitude D. its speed in a vacuum B. its color What kind of electromagnetic radiation is commonly use for the following purposes? 1. Medical imaging of bone fractures. 2. Controlling air traffic by locating planes. 3. Verifying the authenticity of a hundred dollar bill. 4. Providing plants with the energy for photosynthesis. 1. X-rays 2. radio waves 3. ultraviolet 4.visible light What kind of electromagnetic radiation is likely to cause a nasty sunburn if you do not use sunscreen at the beach? A. radio waves B.ultraviolet C. infrared D. visible light B. ultraviolet Select whether the following characteristics describe sound waves or light waves. 1. travels incredibly fast. 2. is a transverse wave. 3. can travel through a vacuum. 4. requires a mechanical medium. 5. much, much lower frequency. 1. light 2. light 3. sound 4. light 5. sound [Show Less]
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WGU-C165: Integrated Physical Science Questions and Answers 2023
Chemistry: The study of atoms and molecules, their structures, and their interactions to form various substances. Physics: The study of forces, en... [Show More] ergy and motion. Earth Science: This field focuses on Earth's structure and composition, as well as the processes that change Earth, such as volcanic and seismic activity. Physical Science: The scientific study of nonliving matter. Ex: chemistry, physics, and Earth science. Astronomy: The study of the moon, stars, and other objects in space. Controlled Experiment: An experiment in which only one variable is manipulated at a time.. Independent Variable: The variable that is manipulated in an experiment. Dependent Variable: The outcome factor; the variable that may change in response to manipulations of the independent variable. Control Variable: A variable that is kept constant during a controlled experiment. Observational Study: The systems are observed as they appear in nature and researchers do not attempt to change them. Laboratory Experiment: Researchers study the system of interest in a highly controlled artificial setting (lab). Physical Model: A physical representation of an object. Ex: Scaled down version of the solar system. Conceptual Model: A verbal or graphical explanation for how a system works or is organized. Ex: posters, charts. Mathematical Model: Uses different forms of data to represent the way a system or process works. Ex: formulas, graphs, mathematical means. Ex: F=ma (formula). Computer Model: A computer program that models an event or object. Important in explaining and predicting natural phenomena. Ex: weather patterns, solar system. Principle of Falsification: Principle that only falsifiable statements can be subject to scientific inquiry. Hypothesis: A testable prediction, often implied by a theory. Theory: A hypothesis that has been tested with a significant amount of data. Law: A concise statement that is supported by scientific evidence and repeated experiments. Describes a widespread pattern in nature. Intended to be universal. Scientific Investigation: Scientists test their ideas with a variety of different types of investigations. Ex: laboratories, controlled experiments, astronomy, field studies, models. SI System: International System of units based on the metric system and units derived from the metric system. Base Quantities: Seven designated physical quantities (sets) from which all other SI quantities can be derived. (1) Meter (m)-length (2) Kilogram (k)-mass (3) Second (s)-time (4) Kelvin (K)-temperature (5) Amperes (A)-"amp"-electric current (6) Candela (cd)-light intensity (7) Moles (mol)-amount of substance Time: Base quantity that measures how long an event lasts or the break between events. Length: Used to describe the distance between two objects, or the two ends of an object. Mass: Used to describe the amount of matter in an object. Temperature: A measure of how hot or cold something is. Gram: a metric unit of mass equal to one thousandth of a kilogram. Meter: The base unit of length in the metric system. Unit symbol (m). Liter: Basic unit of volume in the metric system. Unit symbol (l). Second: SI base unit for time. Unit symbol (s). Kelvin: Si base unit of temperature. Unit symbol (K). Mega: Metric prefix one million of the base unit. 10^6 Unit symbol (M). Kilo: Metric prefix 1/1000 or 10^3. Unit symbol (k). Deci: Metric prefix 1/10th or 10^(-1) (0.1). Unit symbol (d). Centi: Metric prefix 1/100th or 10^(-2) (0.01). Unit symbol (c). Milli: Metric prefix 1/1000th or 10^(-3) (0.001). Unit symbol (m). Micro: Metric prefix 1/millionth of the base unit. 10^(-6) (0.000001) Nano: Metric prefix 1/billionth 10^(-9) (0.000000001). Unit symbol (n). Derived Units: What is produced when the base units/quantities are combined. Triple Beam Balance: Instrument used to measure mass. Graduated Cylinder: Instrument used to measure volume of a liquid. Direct Relationship: When an increase of one variable results in an increase of the other, or a decrease of one results in a decrease of the other. Inverse Relationship: When one variable increases and the other one decreases, or when one decreases and the other increases. Speed: The distance an object travels per unit of time. Velocity: The speed and direction of a moving object. Acceleration: Chang in an object's velocity; occurs when an object: *speeds up *slows down &/or *changes direction Force: A push or pull exerted on an object. Combined Forces: Two or more forces acting in the same direction on the same object. They add to produce a net force that is stronger than any one of the forces. Net Force: The sum of all forces acting on an object. Opposing Forces: Two forces of the same magnitude acting on the same object in opposite directions. Balanced Forces: Forces that combine to produce a net force of zero. Unequal Forces: Opposite forces acting on an object and unequal in magnitude. [Show Less]
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