Across
- 2. Earth is in the “Goldilocks ___”
- 3. The star at the center of our solar system
- 5. Very hot planet with thick clouds
- 11. A giant planet in our solar system
- 13. Harmful energy from space that Earth blocks
- 14. Gas humans need to breathe
- 15. The layer of gases around Earth
- 17. The planet where we live
- 18. A large object that orbits the Sun
- 19. Closest planet to the Sun
Down
- 1. Name of Earth’s special life zone
- 3. Planet with beautiful rings
- 4. Part of Earth’s protective field
- 6. Gas that helps balance Earth’s air
- 7. What humans do using oxygen
- 8. Red planet scientists study
- 9. Liquid needed for all living things
- 10. Flowing water on land
- 12. How hot or cold something is
- 16. Large bodies of salt water on Earth