Easy Electricity!

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Across
  1. 1. Lights up when electricity flows through it
  2. 3. It can be opened and closed to interrupt the flow of electricity
  3. 7. Something that doesn't allow an electrical current to pass through it
Down
  1. 2. A device that contains one or more cells and produces chemical energy which is converted into electrical power
  2. 4. A thin flexible piece of metal
  3. 5. A closed loop of path around which an electrical current can flow through it
  4. 6. Makes a noise when electricity passes through it