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]