Across
- 4. Energy isn't created/destroyed
- 5. Spots on the sun
- 10. most dangerous kind of energy
- 12. Rain with a low pH level
- 15. Bursts of energy from the sun
- 19. The cycle of carbon
- 20. Hard variety, very flammable
- 22. Soft coal, tarlike substance
- 24. Found from fossils
- 27. Stored energy
- 28. Produces sulfur-dioxide
- 29. Soft, brownish coal
- 30. Used for gasoline
Down
- 1. Used in radios
- 2. Energy from the sun
- 3. Ability to work
- 6. A limited resource
- 7. Passes through materials opaque to light
- 8. Used in TV remotes and thermal vision
- 9. Hot air rises, cool air sinks
- 11. The star in our solar system
- 13. heat transferred by touch
- 14. Energy from the sun
- 16. Energy from the sun
- 17. decayed plant material
- 18. most visible part of the sun
- 21. Energies' ability to change forms
- 23. Energy of motion
- 25. stream of charged particles given by the sun
- 26. Outer layer of the sun