Across
- 2. chemical potential energy obtained from renewable organic materials
- 4. a fuel that has formed from the remains of plants and animals that lived in the past, including coal, petroleum (oil), and natural gas
- 5. the sum of the kinetic energy and all the forms of potential energy in a system
- 7. stored energy that can be used later
- 9. energy produced by the sun
- 12. an energy resource that is easily replaced by natural methods
- 13. electrical energy generated by the movement of water
- 14. an energy resource that is not replaced naturally
Down
- 1. energy that an object possesses due to its motion
- 3. energy from the wind; can be used to turn turbine blades that are attached to generators
- 6. the ability to do work
- 8. thermal energy that originates deep within the earth's interior
- 10. energy produced by nuclear reactions
- 11. mechanical energy in rising and falling tides