Best way to light up a city

123456789101112131415
Across
  1. 2. energy of moving water, a renewable resource
  2. 4. a form of energy, such as what usually powers light bulbs
  3. 6. a machine that can turn the movement of water into electricity
  4. 7. energy in the form of heat, such as what usually comes from a fire
  5. 10. a machine that can turn sunlight into electricity
  6. 11. a type of gas that can be used as a source of energy
  7. 12. energy from the Sun, a renewable resource
  8. 14. a machine that can turn the movement of air into electricity
  9. 15. an image that helps you understand the number or amount of something
Down
  1. 1. a source of energy that exists in a limitless amount, such as sunlight, wind, and moving water
  2. 3. a person who uses science to come up with solutions to problems
  3. 5. energy of moving air, a renewable resource
  4. 8. something harmful in the environment
  5. 9. a dark rock that can be burned and used for energy
  6. 13. the ability to do an action