Grade 4 Human Uses of Energy Lesson 1 & 2

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Across
  1. 2. a liquid fossil fuel gas that is burned for energy
  2. 6. the result of an event
  3. 9. an unstable element used by humans as an energy source
  4. 10. a device that changes the energy of motion into electrical energy
  5. 12. a device that stores chemical energy that can change into electrical energy
  6. 14. a substance produced by pressure and decaying organisms that is used for energy
Down
  1. 1. a substance that releases energy when it burns
  2. 3. a device that contains a wheel with blades that rotate by pressure of moving water, steam and air
  3. 4. an energy source made from unstable elements, such as uranium
  4. 5. objects made for a specific purpose
  5. 7. the burning of a fuel to produce heat and light
  6. 8. first or most important
  7. 11. a fossil fuel gas that is burned for energy
  8. 13. a solid fossil fuel that is burned to transfer energy