Midterm 1 - Quiz 9 - Quiz & Trivia

1. Given that Mars' atmosphere is composed of "greenhouse gases" why is the surface temperature not higher?

"greenhouse" effect only works when there is significant cloud cover on the planet.

All of the above

None of the above

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More questions on Mars.

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2. Mars appears red because:

Carbon dioxide in Mars' atomosphere reflects dominantly red light

The surface temperature of Mars means that the planet radiates dominantly in the "red" part of the spectrum.

Iron(rust-like) compounds in the surface material of the planet.

All of the above

None of the above

3. Carbon dioxide, in addition to being the dominant has in the Martian atmosphere, is also found:

In polar "ice" caps

Absorbed in the surface rocks

All of the above

None of the above

4. Additional evidence for liquid water at some time in the history of Mars includes:

Runoff channels

Outflow channels

"gullies" in craters walls

All of the above

None of the above

5. Which of the following best characterizes a shield volcano?

It sits above a hot spot in the planet's mantle.

It has very steep slopes.

It can erupt only briefly before being dragged off the hot spot.

It cannot get as high as Mt. Everest bfore the thin crust starts slumping.

It cannot grow very large, for it has a very short span of eruption.

6. Where is the water today on Mars?

In "permafrost" layers

In permanently frozen "residual" ice caps at the north and south poles

In trace amount in atmospheric clouds

All of the above

None of the above

7. The seasonal changes in the "polar caps" is largely from:

Dust layers due to very different winter vs summer patterns of dust storms

Layers of frozen water

Layers of frozen carbon dioxide (often called "dry ice")

All of the above

None of the above

8. Evidence for liquid water at some time in the history of Mars includes:

Valles Marineris

Valles Grande

The "canali" observed by Schiaparelli and Lowell

All of the above

None of the above

9. Dust storms on Mars are about the size of:

Lake Superior

Texas

North America

Virtually the entire planet

All of the above