Across
- 3. energy Energy from the sun
- 4. Drives the solar system
- 7. A ball of gas in space
- 9. The last layer of the atmosphere
- 11. The last planet of the solar system
- 13. Thin and wispy
- 14. A solid becoming a liquid
- 17. The planet with rings
- 19. A thunder cloud
- 20. Part of an atom
Down
- 1. The first layer of the atmosphere
- 2. 21% of it is in the air
- 5. Everything to exist
- 6. Earths sister planet
- 8. The process plants go through to make food
- 10. The force that keeps us on the earth
- 12. The planet we live on
- 14. The hottest planet
- 15. Making a liquid solid
- 16. A thin wispy cloud
- 18. The biggest planet