Energy Resources

123456789101112
Across
  1. 4. a natural fuel such as coal or gas
  2. 8. the prevention of the wasteful use of energy
  3. 9. burned to produce heat or power
  4. 11. heats energy from the earth
  5. 12. a fossil fuel
Down
  1. 1. processes that convert energy from one type
  2. 2. the action of insulating something
  3. 3. a renewable source of energy that generates power by using a dam or diversion structure
  4. 5. the ability to achieve an end goal with little to no waste, effort, or energy
  5. 6. radiant energy emitted by the sun
  6. 7. comes from plants and animals
  7. 10. where a substance is refined