Mars, the Red Planet: teacher key

Mars, grade 2 edition, written for 2nd grade. Mars is a cold, red desert world with two lumpy moons. Robots and a helicopter have explored it.

Read the book. Print this page for the key.

Questions and answers

Where is most of the water on Mars today?
- As ice, near the poles (answer)
- In big oceans
- In the air
What is Curiosity?
- A robot rover (answer)
- A moon of Mars
- A volcano
Gravity on Mars is only about 38 percent as strong as on Earth. A box weighs 100 pounds on Earth. About how much would it weigh on Mars?
- About 138 pounds
- About 100 pounds
- About 38 pounds (answer)
What are the moons of Mars like?
- Round
- Lumpy, like potatoes (answer)
- Made of ice
Why does Mars look red?
- Its ground has rusty iron (answer)
- It is very hot
- It has red water