Inventions of the 20th Century

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Across
  1. 2. A powerful orbiting telescope that captures images of deep space.
  2. 6. A pattern of lines used to identify products in stores.
  3. 7. A system that connects websites, created by Tim Berners-Lee.
  4. 9. A synthetic material invented by Leo Baekeland, revolutionizing manufacturing.
  5. 10. A powerful engine that made faster air travel possible.
  6. 13. A mass-produced automobile created by Henry Ford.
  7. 15. A fastening device with interlocking teeth, commonly used on clothing.
  8. 19. Albert Einstein’s groundbreaking theory about space and time.
  9. 21. A clearer radio transmission system developed by Edwin Armstrong.
  10. 24. Rust-resistant metal alloy widely used in cookware and buildings.
  11. 26. Invented by the Wright brothers, this machine made human flight possible.
  12. 28. Conditioner A cooling system invented by Willis Carrier to regulate temperature.
  13. 29. A concentrated beam of light used in surgery, industry, and entertainment.
  14. 32. Armored vehicle first used in World War I.
  15. 33. A plastic card for cashless transactions, introduced by Diners Club.
  16. 34. Used for reminders, invented by accident.
  17. 35. A household device that sucks up dust and dirt.
  18. 36. First used in the Manhattan Project, this energy source powers reactors and weapons.
Down
  1. 1. A method for identifying people based on their genetic code.
  2. 2. A powerful orbiting telescope that captures images of deep space.
  3. 3. A device used to record airplane flight data and conversations.
  4. 4. The first antibiotic, discovered by Alexander Fleming.
  5. 5. A vertical takeoff aircraft designed by Igor Sikorsky.
  6. 8. A small electronic component that replaced vacuum tubes, leading to modern computers.
  7. 11. A vehicle that glides on a cushion of air, moving over land and water.
  8. 12. A portable telephone invented by Martin Cooper.
  9. 14. A system for sending electronic messages over the internet.
  10. 16. A machine that makes duplicate copies of documents.
  11. 17. Converts sunlight into electricity, an early step in solar energy.
  12. 18. A signaling device that controls the flow of vehicles and pedestrians.
  13. 20. A handheld device that moves a cursor on a screen.
  14. 22. A hook-and-loop fastener inspired by burrs sticking to clothes.
  15. 23. A safety device in cars that secures passengers in place.
  16. 25. A low-energy light-emitting diode used in screens and indicators.
  17. 27. Underwater detection system developed for submarines.
  18. 28. An automated banking machine that dispenses cash.
  19. 30. A fast-cooking kitchen appliance that uses electromagnetic waves.
  20. 31. Pen A pen with a rolling ball tip, replacing traditional ink pens.