circuit by Archie D

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Across
  1. 4. turns electrical energy into mechanical energy.
  2. 6. converts mechanical energy (motion) into electrical energy
  3. 7. something to turn something on and off
Down
  1. 1. something that turns energy into sound.
  2. 2. something you need to power a circuit
  3. 3. something that uses the energy
  4. 5. something that positive and negative flow through