WorksheetsWhy we explore Mars—and what decades of missions have revealed
Total questions: 9
Worksheet time: 7mins
What gas is mainly found in Mars' atmosphere?
Oxygen
Carbon Dioxide
Hydrogen
Nitrogen
How long is a year on Mars?
365 days
687 days
700 days
1300 days
What features on Mars indicate that there was once water?
Mountains
Rivers and valleys
Desert
Forests
Why can't Mars support Earth-like life today?
It is too cold
It has too much water
It has a thin atmosphere
It is too big
Mars is smaller than Earth.
True
False
Mars is the ____ rock from the sun, just after earth.
Fifth
Fourth
Second
Third
How does Mars’ gravity compare to Earth’s?
It is stronger than Earth’s gravity.
It is weaker, at 38% of Earth’s gravity.
It is the same as Earth’s.
It varies widely across the planet.
Why is water not accessible on Mars?
It evaporates too quickly.
It is too deep underground.
It is locked in polar ice caps and beneath the surface.
There is no water present at all.
The planet’s land area is roughly equal to the Earth’s continents.
True
False
