Exam 6: Exploring Terrestrial Surface Processes and Atmospheres

The carbon dioxide atmosphere of Mars was much denser in Mars's early history than it is now.What process is now believed to have begun this atmospheric thinning?

An impact crater will always reproduce the shape of the original impacting object.

What are some unique surface features of Mercury?

The Tharsis rise on Mars,a region that is higher than the surrounding plain by about 5 km (over 16,000 ft),was caused by

Valles Marineris on Mars is thought to be a rift valley,a feature created when a planet's crust breaks apart a fault line.

A mare on the Moon is a

The surface and near-surface atmospheric conditions on Venus are

What appears to have caused the extensive cracking and streaking of the surface of Europa?

Recent observations of Mars have revealed strong evidence that water once existed in substantial amounts on Mars.Which of the following is NOT one of these observations?

How was water found on the Moon?

What property is shared by Earth and Europa,one of Jupiter's large moons?

Compared to Mauna Loa on Earth,Olympus Mons on Mars is

On which other world in the solar system do we find evidence of ice rafts (now apparently frozen)similar in many respects to ice rafts in the Arctic Ocean?

Jupiter's moon,Io,may have as many as 300 active volcanoes on its surface.

How did the inner planets,Venus and Earth,acquire their original atmospheres?

When were the Moon's highlands formed?

The most common surface features on Venus are

Tectonic activity on Venus differs from that on Earth in that

No spacecraft have successfully landed on the surface of Mars,but it has been mapped with satellites orbiting the planet.

Venus has a higher surface temperature than Mercury.Which of the following is an explanation for this?