Topic 7 Vocabulary

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Across
  1. 3. a fossil fuel that occurs in the gas state.
  2. 5. result
  3. 6. original source of energy of almost all fuel is the sun.
  4. 7. a material that releasees energy as heat when it burns.
  5. 10. a device that spins as the gas flows and changes the heat energy of the steam into energy of motion.
  6. 12. heat obtained from beneath Earth's surface.
  7. 14. process of burning a fuel to produce heat and light.
  8. 15. a device that changes energy of motion into electrical energy.
  9. 16. a liquid fossil fuel formed by the decay of ancient plants and animals.
  10. 17. hard, black substance
Down
  1. 1. using the energy of moving water.
  2. 2. unstable elements that produce this energy in power plants.
  3. 4. materials that are formed as ancient plants and animals decayed underground.
  4. 8. an element
  5. 9. something made for a particular purpose.
  6. 11. stores chemical energy and can convert that energy into electrical energy.
  7. 13. able to be had