Astronomy Quiz 8: Ch 10

_________________ is very long and deep canyon on Mars. A: Valles Marineris B: Phobos C: Ishtar Terra D: Tharsis Bulge E: Lobate Scarp

A: Valles Marineris

The greenhouse effect occurs because .... A: ozone is transparent to infrared radiation and opaque to ultraviolet radiation B: ozone is transparent to visible light and opaque to infrared radiation C: carbon dioxide is transparent to visible light and opaque to infrared radiation D: the sun emits more infrared radiation than ultraviolet radiation E: carbon dioxide is transparent to infrared radiation and opaque to ultraviolet radiation

C: carbon dioxide is transparent to visible light and opaque to infrared radiation

The process by which Venus became so much hotter than the Earth is called A: radioactivity B: tectonic displacement C: the runaway greenhouse effect D: the reverse greenhouse effect E: ozone depletion

C: the runaway greenhouse effect

The Viking spacecraft were designed, in part, to search for life on Mars. Which of the following statements about the results of those experiments is true? A: Viking found fossilized life from the Martian past. B: Viking found a form of life that doesn't need water. C: Viking found bacteria, but no large life forms. D: Viking found Amelia Earhart and Jimmy Hoffa, but NASA has conspired to keep it a secret. E: Viking found ambiguous evidence which proved nothing.

E: Viking found ambiguous evidence which proved nothing.

The polar caps of Mars are made of frozen______ and _________. A: carbon dioxide, methane B: water, methane C: carbon dioxide, ammonia D: water, nitrogen E: water, carbon dioxide

E: water, carbon dioxide

T/F: Life has been found on Mars

False

T/F: The clouds of Venus are made of water

False

T/F: There is no water on Mars now

False

T/F: Venus is similar to Earth in size and mass

True

T/F: Venus is very hot because it atmosphere is rich in carbon dioxide

True