Which planet has the longer day?

• Earth

• Mars

Why is Mars' year longer than Earth's?

• Mars is closer to the Sun.

• Earth is farther from the Sun.

• Mars is farther from the Sun.

What does Mars' tilt mean for the planet?

• Mars also experiences seasons

• Mars will soon fly out of orbit.

• Mars experiences the same cold temperatures all over the planet, all year.

What happens to Mars' atmosphere at its poles?

• It evaporates.

• It freezes.

• It boils.

• It condenses.

What are the polar caps primarily made of on Mars?

• Carbon dioxide

• carbon monoxide

• water

What do scientists believe cause the spiral patterns in the ice at Mars' poles?

• gravity alone

• gravity and inertia

• Epithileal Effect

• Coriolis Effect

Which is a similarity between Mars and Earth?

• their gravitational pull

• their size in diameter

• the length of a day

• the density of the planet

What is Olympus Mons?

• a sport on Mars

• the tallest volcano in the Solar System

• the most explosive volcano in the Solar System

If Olympus Mons was on Earth, what would cause it to be pulled down?

• gravity

• erosion

• water

• inertia

What is Valles Marineris?

• a huge crater

• a huge valley

• a huge canyon

• a huge mountain range