Across
- 2. the energy that takes the form of a wave
- 4. the process of converting stored chemical energy into usable energy
- 7. this kind of mining digs out large areas of land on the surface
- 10. dead plant material
- 11. the energy stored in chemical bonds
- 13. an unstable atom that is used as fuel for nuclear reactors
- 15. the facilities used to separate components of crude oil
- 17. this energy is used to power our houses
- 18. energy of an object due to its position or shape
- 20. gas methane is a common example of this
- 21. a controversial extraction method that can cause earthquakes
- 22. the most commonly used fossil fuel for electricity generation
Down
- 1. this sector accounts for the largest percentage of energy used in the economy
- 3. the type of energy that was used for weapons of war
- 5. this is given off by the movement of molecules
- 6. the site in Ukraine where the worst man made ecological disaster took place
- 8. another word for oil
- 9. fossil fuels are this kind of resource
- 12. the fossil fuel used in cars
- 14. the energy used to lift weights
- 16. the energy of motion
- 19. wind can be classified as this kind of resource