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