Inventions Used Today

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Across
  1. 4. a boat powered by steam engines
  2. 5. a ship that travels underwater
  3. 7. shoots a stream of water, gas, or foam
  4. 8. a steel device used to find a specific tune or pitch
Down
  1. 1. a tool to improve your eyesight
  2. 2. container filled with energy
  3. 3. something that uses steam to make power
  4. 6. a musical instrument with a wooden case and strings attached