Chapter 2 Vocabulary

1. fuel unstable elements that produce energy in power plants.
6. the process of burning a fuel to produce heat and light.
9. a device that changes energy of motion into electrical energy.
11. a material that releases energy as heat when it burns.
13. a device that spins and the gas flows and changes the heat energy into the energy of motion.
14. something that stores chemical energy and can convert that energy into electrical energy.
15. using the energy of moving water.
16. a hard, black substance that is formed when chemical changes transform plant stems and leaves.
17. an element used in most nuclear power plants.
18. energy heat energy obtained from beneath Earth’s surface.

2. the release of substances into the environment.
3. a harmful substance that can poison land, water or energy.
4. something made for a particular purpose.
5. fuels materials that formed as ancient plants and animals that decayed underground.
7. gas a pollutant that increases the atmosphere’s ability to hold heat.
8. a substance that reduces the amount of pollutants that get into the air.
10. gas a fossil fuel that occurs in the gas state.
12. a liquid fossil fuel formed by the decay of ancient plants and animals.