Energy Review

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Across
  1. 1. When the amount of energy coming in equals the amount of energy going out, this is balanced
  2. 4. All energy on Earth starts with this
  3. 7. This uses the energy of falling water
  4. 10. This energy source uses the power of tides
  5. 13. This is often used for heat and cooking
  6. 14. This traps heat in our lower atmosphere, keeping Earth warm
  7. 19. This type of energy comes from a source that won't run out
  8. 20. This describes a fuel that can't be renewed
  9. 22. energy This energy source is found is food and batteries
  10. 24. This helps block light from the sun and protects Earth
  11. 25. This energy source creates heat
  12. 26. This type of clean energy uses turbines to generate electricity
Down
  1. 2. This refers to how tightly packed molecules are
  2. 3. This energy source is stored energy
  3. 5. How energy moves using rays or waves
  4. 6. This is pumped out of the ground and turned into gasoline
  5. 8. Warm air is less _________ than cold air
  6. 9. These are made from ancient plants and animals
  7. 11. These currents are created when warm air rises and cold air sinks
  8. 12. This energy source uses heat from Earth
  9. 15. This fuel source comes from mines and is burned to generate electricity
  10. 16. This describes energy that's used to complete a task
  11. 17. This gas traps heat in our atmosphere
  12. 18. This uses radiation from the sun that is stored in batteries that generate electricity
  13. 21. This energy source comes from movement
  14. 23. This describes an energy transfer that involves touch