Across
- 6. the frozen portion of water on Earth's surface
- 7. thermal energy from Earth's interior
- 8. a process in which mined land must be recovered with soil and replanted with vegetation
- 10. coal, oil, and natural gas
- 11. water that is stored in cracks and pores beneath Earth's surface
- 12. resources that can be replaced by natural processes in a relatively short amount of time
Down
- 1. the process by which atoms are split in nuclear power plants
- 2. natural locations where water is stored
- 3. an energy resource that uses organic matter such as wood, food scraps, and alcohol
- 4. the system containing all of Earth's water
- 5. a group of wind turbines that produce electricity
- 9. fuel used by nuclear power plants