Thomas Edison Vocab

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Across
  1. 2. A small device with many parts
  2. 3. a gesture or message that people use to communicate with each other
  3. 5. It happens sometimes
  4. 6. A helpful device
  5. 7. How an inventor tests and idea
Down
  1. 1. Powered by electricity
  2. 2. A smart person
  3. 4. Where experiments are done