Mars: Geological Features and Atmosphere

What causes Mars's distinctive red color?

• Volcanic eruptions

• Oxidized iron dust

• Presence of red algae

• Reflected light from the Sun

Which of the following is a prominent geological feature on Mars?

• The Great Red Spot

• Valles Marineris

• The Rings of Mars

• The Martian Ocean

What is a key characteristic of Mars's atmosphere?

• It is primarily composed of nitrogen.

• It is denser than Earth's atmosphere.

• It is mostly carbon dioxide and very thin.

• It provides strong protection from asteroid impacts.

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What is the predicted long-term fate of Phobos, one of Mars's moons?

• It will eventually escape Mars's gravity and drift into space.

• It will collide with Mars's surface.

• It will merge with Deimos to form a larger moon.

• It will stabilize its orbit at a lower altitude.

What evidence suggests that Mars once had abundant flowing water on its surface?

• The presence of active volcanoes and geysers.

• Observations of current liquid water rivers and lakes.

• Discovery of dry riverbeds, dry lakes, and water-forming minerals.

• Detection of a strong magnetic field protecting its atmosphere.