Across
- 3. Electrical energy generated by the movement of water
- 4. Chemical potential energy obtained from renewable organic materials
- 7. Store energy that can be used later
- 10. An energy resource that is easily replaced by natural methods
- 12. A fuel that has formed from the remains of plants and animals that lived in the past, including coal, petroleum, and natural gas
- 14. Mechanical energy in rising and falling tides
Down
- 1. An energy resource that is not replaced naturally
- 2. Energy from the wind; can be used to turn turbine blades that are attached to generators
- 5. Energy produced by the sun
- 6. The sum of the kinetic energy and all the forms of potential energy in a system
- 8. The study of how things move
- 9. Thermal energy that originates deep within the earth's interior
- 11. Energy produced by nuclear reactions
- 13. The ability to do work