Energy

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Across
  1. 4. Object that heat has trouble going through
  2. 5. Energy that attracts things to each other
  3. 7. Main source of energy
  4. 8. Energy that can never run out
  5. 9. Type of electricity made when you rub things together
Down
  1. 1. How loud or quiet a noise is
  2. 2. Energy used by computers
  3. 3. Energy made by vibrations
  4. 6. Object that heat can easily go through
  5. 7. Energy from the sun that we can use in things like calculators