Inventions

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Across
  1. 2. - A device that receives and transmits sound signals
  2. 8. - A tool for viewing distant objects in space
  3. 9. - A device for long-distance voice communication
  4. 10. - A glass bulb that produces light when powered
Down
  1. 1. - A device to see tiny details of small objects
  2. 3. - A flying vehicle for transportation
  3. 4. - A circular object essential for movement and transport
  4. 5. - A process of producing text and images on paper
  5. 6. - A machine used for computing and processing information
  6. 7. - Energy produced by heating water, used in early engines