Young Thomas Edison Vocabulary

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Across
  1. 3. works by electricity
  2. 4. a small machine or tool that is useful
  3. 6. a sound, movement or another sign that sends a message
  4. 7. a test that helps scientists work and do experiments
Down
  1. 1. something new someone makes
  2. 2. not very often
  3. 3. a test that helps scientists ask questions
  4. 5. being very smart