Across
- 4. shale from which oil can be obtained by heating
- 7. Slow-flowing, viscous deposits of bitumen mixed with sand, water, and clay
- 9. nuclear change in which isotopes of light elements are forced together at high temperature
- 10. fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
- 12. the energy made by motion
- 13. power that involves the sun
- 15. energy that cannot be renewed
- 17. a slippery or viscous liquid or liquefiable substance not miscible with water
- 18. energy that is renewable
Down
- 1. a fossil fuel in the gaseous state
- 2. power that involves water
- 3. the energy produced by the flow and interaction of electrons
- 5. burning; the chemical reaction when fuel combines rapidly with oxygewn
- 6. cells also known as solar cells
- 8. abbreviation for synthetic natural gas
- 9. Potential Energy stored in the Nucleus of an Atom
- 11. a dark oil consisting mainly of hydrocarbons
- 14. the energy that an object has because of it position or shape
- 16. the ability to do work or cause a change
- 19. power that involves windmills