circuit crossword

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Across
  1. 1. converts sound energy into light and heat energy
  2. 3. everything in this subject falls under this title
  3. 5. the symbol for this is:_______
  4. 6. this turns electrical energy into movement energy
Down
  1. 1. coverts electrical energy into sound energy
  2. 2. pack alternative to using cells
  3. 3. this powers the circuit
  4. 4. this component lets you turn the circuit on and off