Across
- 4. Find the gas that mostly makes up the atmosphere on Mars.
- 7. Find the word for the layer of gases around Mars.
- 8. Find the word that means deadly or causing death.
- 11. Find the word that describes being cut off or alone.
- 12. Find the word that shows Mars offers scientific hope for the future.
- 14. Find one physical feature of Mars mentioned in paragraph 1. Mars has enormous ________.
- 15. Find what may once have flowed across the Martian surface.
- 16. Find the word used for places humans might build on another planet.
- 18. Find the word that describes what some scientists believe Mars exploration could lead to.
Down
- 1. Find what humans would need for a simple walk outside on Mars.
- 2. Find another physical feature of Mars. Mars has dry river ________.
- 3. Find and copy the word that means Mars is harsh or dangerous to live in.
- 5. Find the machines that have already explored Mars.
- 6. Find one way Mars is similar to Earth. Mars has ________.
- 9. Find one problem on Earth mentioned in the text.
- 10. Find and copy the word that describes Mars’ “rusty red” appearance.
- 13. Find what Mars is exposed to from the Sun.
- 17. Find the planet that the text is mainly about.