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Mars Planet Facts

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Questions and Answers

What is the primary gas that makes up Mars' thin atmosphere?

Nitrogen

Oxygen

Carbon dioxide (correct)

Methane

How many moons does Mars have?

Three

Two (correct)

None

One

What is the approximate distance of Mars from the Sun in astronomical units (AU)?

5.20 AU

0.39 AU

1.52 AU (correct)

9.54 AU

Which of the following is NOT mentioned as a factor that has altered the solid surface of Mars?

Tides Signup and view all the answers

What is the approximate size of Mars compared to Earth?

If Earth were the size of a dime, Mars would be as big as an aspirin tablet. Signup and view all the answers

Which of the following is NOT mentioned as a reason for Mars' reddish appearance?

The presence of organic compounds in the Martian soil. Signup and view all the answers

According to the passage, why was Mars named after the Roman god of war?

Because Mars has a reddish color reminiscent of blood Signup and view all the answers

What did the ancient Egyptians call the planet Mars?

Her Desher, meaning 'the red one' Signup and view all the answers

Why is Mars frequently called the 'Red Planet'?

Because iron minerals in the Martian dirt oxidize, causing the surface to look red Signup and view all the answers

What are scientists looking for on Mars?

Signs of life that existed long ago when Mars was warmer and covered with water Signup and view all the answers

How does the length of a Martian day compare to an Earth day?

A Martian day is slightly longer than an Earth day Signup and view all the answers

How do the seasons on Mars differ from the seasons on Earth?

The seasons on Mars vary in length due to Mars' elliptical orbit around the Sun Signup and view all the answers