Across
- 5. careful use of resources
- 8. could meet 5-10% of U.S. energy needs
- 9. forms from remains of plants & animals.
- 10. resource that can be replenished in months, years, or decades
- 12. liquid that forms from remains of plants & animals.
- 13. forms when heat/pressure transform plant material
- 16. energy that uses water to drive turbines
- 18. hydrocarbon used as an energy source
- 19. deposit formed when minerals settle quickly from moving water.
- 20. collecting items for reuse
Down
- 1. energy formed by fission
- 2. source of pollution from a known location
- 3. form thick tar called bitumen.
- 4. Earth's most abundant energy resource
- 6. point pollution with no specific point of origin
- 7. takes millions of years to form & accumulate
- 11. best known placer deposit
- 14. rock containing kerogen.
- 15. uses underground steam & hot water
- 17. uses ocean tides to create power