Across
- 4. factory that separates crude oil into different products
- 7. a non-renewable energy resource formed when the remains of plants and animals are buried quickly
- 9. this kind of energy is produced in water dams
- 10. solid substance found naturally in earth’s surface, has never been alive
- 11. a low-growing crop planted to prevent erosion
- 13. a solid, usually black, non-renewable energy resource; can be bituminous, anthracite, or lignite
- 14. this forms when sea water freezes
- 15. layer of sand, gravel, or bedrock that holds and moves ground water
- 16. a radioactive mineral used to produce nuclear energy
- 17. soft and easily shaped
- 18. a floating ice sheet
Down
- 1. a narrow, concentrated area of a specific mineral
- 2. liquid rock, used to make gasoline and other products
- 3. all of earth’s water found in lakes, oceans, rivers, soil, underground, and in the air
- 5. the condition of a resting field that does not have a crop for a season
- 6. chemicals produced from oil
- 8. the path that recycles water from land to sky and back to land
- 11. this kind of energy uses heat from the earth to produce steam
- 12. this word means a resource can be replaced by natural means within a person’s lifetime
- 19. coming from the sun