Inventors and Inventions - Thomas Edison Vocabulary Quiz

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Across
  1. 1. a tool or machine that has a certain purpose
  2. 2. the use of science to invent useful things or to solve problems
  3. 4. a way to find unseen objects by using radio signals
  4. 5. extremely clever or skillful
  5. 6. useful, helpful or important
  6. 8. able to do a lot with the time and resources you have
  7. 9. something created that did not exist before
Down
  1. 1. writing down words that have been spoken
  2. 3. the first of its kind
  3. 7. an important discovery after many tries