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Earth's secondary atmosphere occurred when _____________ was added to the carbon dioxide, water vapor, and nitrogen mix by plant life, and _____________ was removed from the carbon dioxide, water vapor, and nitrogen mix by dissolution in seawater.

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oxygen, ca...

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Slow surface evolution on the Moon is limited to


A) low-density masses of rock rising from the interior.
B) low level meteorite impacts.
C) moonquakes disturbing the surface features.
D) motion along a network of small faults.
E) All of the other choices are correct.

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  What is the above graph showing? A)  when the ozone hole formed B)  how the industrial revolution contributed to global warming C)  how the industrial revolution contributed to greenhouses gasses in Earth's atmosphere D)  None of the other choices are correct. What is the above graph showing?


A) when the ozone hole formed
B) how the industrial revolution contributed to global warming
C) how the industrial revolution contributed to greenhouses gasses in Earth's atmosphere
D) None of the other choices are correct.

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The presence of breccias among the lunar rock samples shows that


A) volcanism did not occur on the Moon.
B) molten lava once flowed over the lunar surface.
C) the crust must have been made of anorthosite.
D) water once existed on the Moon in the form of small lakes and streams.
E) the lunar surface was fragmented by meteorite impacts.

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On the Moon, the maria are younger than the highlands.

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Earth's core is mostly ___________ as indicated by the absence of S waves.


A) solid
B) liquid
C) gas
D) solid and gas
E) solid, liquid, and gas

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Evidence for the drifting of continents or plate tectonics on Earth is


A) the manner in which the outlines of continents fit together much like puzzle pieces.
B) the similarity of rocks found occurring along certain continental coastal areas.
C) the long, continuous ridges found in the middle of the Atlantic Ocean.
D) all of the other choices.

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Which of the following is not produced by plate tectonics?


A) mid-ocean rifts
B) rift valleys
C) the ring of fire
D) the Appalachian Mountains
E) Earth's magnetic field

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Which of these gases is most responsible for the greenhouse effect on Earth?


A) oxygen (O2)
B) nitrogen (N2)
C) carbon dioxide (CO2)
D) ozone (O3)
E) ammonia (NH3)

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The first Apollo missions to the Moon found the maria to be plains of solid lava.

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Slow surface evolution is caused by


A) wind erosion.
B) plate tectonics.
C) differentiation.
D) wind erosion, plate tectonics, and differentiation.
E) wind erosion and plate tectonics.

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Three major greenhouse gases in Earth's atmosphere are ___________, ___________, and ____________, but ____________ is believed to contribute most to global warming.

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water vapor, methane...

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The lunar maria are


A) the lava plains of the lunar lowlands.
B) the smooth plateaus of the lunar highlands.
C) less than one billion years old.
D) moving plates of lunar crust.
E) older than the lunar highlands.

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Pressure (P) waves can travel through a liquid, but shear (S) waves cannot.

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Colliding plates can generate _____________________ ranges.

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In the diagram below label each of the major divisions of Earth's interior. In the diagram below label each of the major divisions of Earth's interior.

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A: Crust, B: Mantle,...

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Why would a decrease in the density of the ozone layer create a public health concern?


A) The greenhouse effect would not be as efficient and the temperature of Earth would decrease.
B) The greenhouse effect would be more efficient and the temperature of Earth would increase.
C) Plant life would no longer have the ozone it needs for photosynthesis to create chlorophyll.
D) Ultraviolet radiation from the Sun would bombard Earth.
E) none of the above

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What causes erosion?


A) wind
B) water
C) glacier ice
D) all of the other choices.

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