NR 130 Exam 1 Study part 1 Questions with Answers
Which of the following statements is FALSE about scientific theories?
A) Scientific theories may
... [Show More] change as our technology changes
B) Scientific theories may change as our knowledge about the natural world increases
C) Scientific theories can be disproven
D) Scientific theories are never changed - CORRECT ANSWER D) Scientific theories are never changed
The _____ is the totality of Earth's water, including oceans, lakes, streams, underground water, all the snow and ice - CORRECT ANSWER Hydrosphere
The _____ includes all of Earth's organisms, as well as any organic matter, not yet decomposed: - CORRECT ANSWER Biosphere
Edwin Hubble did all the following except :
A) Changed our understanding of the universe
B) Confirmed the existence of other galaxies
C) Launched the Hubble Space Telescope
D) Showed that the universe is expanding - CORRECT ANSWER Launched the Hubble Space Telescope
he Earth's Magnetic field: - CORRECT ANSWER Protects against solar winds that otherwise wipe away the atmosphere of our planet
The Mesosaurus is an extinct reptile that lived over 200 million years ago. Its fossil remains have been found in Southern Africa and Eastern South America, but nowhere else. Today, we know that these two regions of the Earth are vastly different in terms of climatology, flora, and fauna. How does the discovery of the Mesosaurus fossil support the concept of Continental Drift (and subsequently Plate Tectonics)? - CORRECT ANSWER Mesosaurus was a coastal animal and therefore could not have crossed the Atlantic Ocean. The distribution of the Mesosaurus fossils indicates that the two continents used to be joined together
The magnetite in the magma, when it cools, will align in the direction of an external magnetic field. True or False? - CORRECT ANSWER True
Earth's diameter is increasing sufficiently due to the generation of new ocean crust. True or False? - CORRECT ANSWER False
What is the densest layer of the earth? - CORRECT ANSWER Mantle
First evidence of Wegners that proposed that earth's continents all once fit together - CORRECT ANSWER Appear to fit together like a puzzle
Why do scientists beleive that the outer core is liquid? - CORRECT ANSWER The P-Wave and S-Waves shadow zones
Why have no earthquakes greater than a magnitude of around 10 ever been observed? - CORRECT ANSWER Rocks can only store a finite amount of elastic energy before they break apart
What does the Richter magnitude scale measure? - CORRECT ANSWER The magnitude of the Earth shaking during an earthquake.
The higher the quantity of silicon dioxide in a magma, the thicker (more viscous) the magma will be. True or False? - CORRECT ANSWER True
What are two major gasses that are released from a volcano? - CORRECT ANSWER water Vapor and Carbon Dioxide
Which type of regolith contains organic material mixed with minerals? - CORRECT ANSWER Soil
Why do small sediments weather faster than larger sediments? - CORRECT ANSWER Smaller sediments have a larger surface area for chemical reactions
The rock cycle is a process solely involving the movement of sedimentary rock from a mountain to a river. True or False? - CORRECT ANSWER False
Stratovolcano - CORRECT ANSWER Tall Cone made of a layer of hardened lava,ash and tephra.
Steep profile
Lava spreads far
Most common
Shield volcano - CORRECT ANSWER broad,domed with gentle sloped sides
Composed of fluid lava flows
Small/low profile
Mud Volcano - CORRECT ANSWER Dome, created by eruption of mud,water and gases
Usually do not produce lava
Fissure - CORRECT ANSWER linear vent, lava erupts without explosive activity
Usually very wide [Show Less]