Across
- 5. Believed by most to have been formed from the remains of plants and animals that lived in the past, 80% of the energy from nonrenewable resources, and includes coal, oil, and natural gas.
- 7. Energy produced by nuclear fission reactions
- 8. The ability to do work
- 11. Heat energy that originates deep within the earth’s interior
- 12. Chemical potential energy obtained from renewable organic materials
- 13. Energy sources that are not easily replaced naturally
- 14. The sum of any kinetic energy and all the forms of potential energy in a system
Down
- 1. The energy produced from the rising and falling tides of water on the earth
- 2. The energy produced from the wind
- 3. A source of energy that is easily replaced by natural methods
- 4. Electrical energy generated by the movement of water
- 6. The energy produced from the sun
- 9. The energy that objects possess due to their motion
- 10. The stored energy of an object that can be produced later