The Venus's atmosphere contains 96 percent _______________.
Fill in the blank(s) with correct word
Question 2Venus has no _______________ to absorb the ultraviolet radiation in sunlight.
Fill in the blank(s) with correct word
Question 3Why is Venus's atmosphere hotter than Mercury even though it is farther from the Sun?
a. Venus has a thin atmosphere thus allowing more of Sun's radiation to enter.
b. Venus contains water vapor in its atmosphere, which absorbs more heat.
c. Venus contains 96 percent CO2 resulting in very hot temperatures.
d. Mars contains more CO2, which has a cooling effect on its atmosphere.
e. Mercury has a hotter atmosphere because it is closer to the Sun than Venus.
Question 4Which statement best describes the greenhouse effect?
a. infrared radiation escapes into space.
b. ultraviolet radiation enters a planet's atmosphere producing a green haze
c. visible radiation is trapped by the atmosphere.
d. infrared radiation is trapped by the atmosphere.
e. oxygen escapes from the atmosphere.
Question 5Since Mars's axis is tipped 25.2o to its orbit, it experiences ____.
a. seasons
b. day and night
c. extreme temperature fluctuations
d. solar eclipses
e. auroras
Question 6The very large size of Olympus Mons indicates that Mars has ____.
a. plate tectonics
b. no plate tectonics
c. a thick atmosphere
d. a molten core
e. a very active surface
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