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