Across
- 2. small nuclei of lightweight elements are forced together to form a heavier nucleus
- 6. cannot be replaced
- 9. the process in which a fuel burns because it combines quickly with oxygen
- 10. Available somewhere on Earth's surface, or they are replaced in a short time
- 11. occurs when sulfide minerals in exposed rock surfaces react with oxygen and rainwater to produce sulfuric acid
- 12. energy associated with the motion and position of an object
- 13. dark liquid fossil fuel made of hydrocarbons
Down
- 1. is the energy that holds these particles together in the nucleus
- 3. extraction of a mineral by removing a strip of the layer of soil and rock on the top of the mineral deposit
- 4. the fuel rods produced so much heat that they melted
- 5. energy caused by using electric charges
- 7. energy released by electromagnetic process
- 8. energy that comes from heat