A) Increase the tilt of the planet's rotation axis.
B) Move the planet closer to the Sun.
C) Increase the greenhouse gas content of the planet's atmosphere.
D) Make the planet rotate more slowly.
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A) It is the most volcanically active world.
B) It rotates much faster than any other terrestrial world.
C) It is the only one that has both a partially molten metallic core and reasonably rapid rotation.
D) It is the only one that has a metallic core.
E) It is by far the largest terrestrial world.
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A) Not much-on human time scales, the mantle looks like solid rock.
B) dense metals falling downward while low- density rock rises upward
C) a rapid, up and down churning of the material in the mantle
D) hot molten rock rising upward throughout the mantle and cool, solid rock falling downward
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A) 250%
B) 2) 5 %
C) 25%
D) None. It has decreased.
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A) the human release of chemicals called CFCs into the stratosphere
B) the fact that our politicians spout a lot of hot air
C) human activities that are increasing the concentration of greenhouse gases in Earth's atmosphere
D) the increase in forest fires during recent years
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A) sunlight must pass through more atmosphere, and this scatters more light at red wavelengths than bluer wavelengths.
B) the cooler atmosphere in the evening absorbs more blue light.
C) sunlight must pass through more atmosphere, and this scatters even more light at bluer wavelengths, transmitting mostly red light.
D) the Sun emits more red light when it's setting.
E) none of the above
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A) Burning fuel warms the planet.
B) Burning depletes the amount of ozone, thereby warming the planet.
C) Burning releases carbon dioxide into the atmosphere.
D) Burning produces infrared light, which is then trapped by existing greenhouse gases.
E) All of the above are true.
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A) the excavation of bowl- shaped depressions by asteroids or comets striking a planet's surface
B) the eruption of molten rock from a planet's interior to its surface
C) the disruption of a planet's surface by internal stresses
D) the wearing down or building up of geological features by wind, water, ice, and other phenomena of planetary weather
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A) gases that absorb ultraviolet light
B) gases that absorb infrared light
C) gases that transmit visible light
D) gases that transmit infrared light
E) gases that absorb visible light
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A) by studying Venus from Earth with powerful telescopes
B) by using radar from spacecraft that were sent to orbit Venus
C) by making computer models of geological processes on Venus
D) by landing spacecraft on the surface for close- up study
E) by studying Venus with powerful telescopes on spacecraft that were sent to orbit Venus
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A) a place where two plates are slipping sideways against one another
B) a place where two plates are pulling apart
C) a place where two continental plates are colliding
D) a place where a seafloor plate is sliding under a continental plate
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A) volcanism, which produced heavy volcanoes that bent and cracked the lithosphere
B) impacts of asteroids and planetesimals
C) cooling and contracting of the planet's interior, which caused the mantle and lithosphere to be compressed
D) internal temperature changes that caused the crust to expand and stretch
E) the circulation of convection cells in the mantle, which dragged against the lithosphere
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A) accretion
B) differentiation
C) radioactivity
D) both A and B
E) all of the above
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Many possible answers: increas...View Answer
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A) It is protected by its magnetic field.
B) Its atmosphere is too thin.
C) It does not have enough additional water to magnify the warming.
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A) Mercury's unusually high density
B) the characteristics of the Caloris Basin
C) the presence of many impact craters
D) the presence of many long, tall cliffs
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