Social Studies Chapter 8

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Across
  1. 1. inventions and improvements that help us solve problems, work more quickly or efficiently, or be entertained
  2. 4. gasoline that prevented a “knocking” sound in car engines; developed by Thomas Midgley, Jr.
  3. 7. a business machine with a money drawer that was opened with a “crank” lever and helped businesses keep track of their money; invented by James Ritty
  4. 8. a light bulb that emits light by heating a filament with an electric current; created by Thomas Edison
  5. 10. a new thing that someone has made
  6. 11. worn to protect people from breathing smoke and other toxic chemicals; invented by Garrett Morgan
  7. 12. way to turn on a car engine with a key; invented by Charles Kettering
Down
  1. 2. allowed people to fly; created by Orville and Wilbur Wright
  2. 3. a thin wire that glows white-hot when electricity passes through it; improved by Thomas Edison
  3. 5. a business machine with a money drawer that could make sales with the push of a button; invented by Charles Kettering
  4. 6. lights that control traffic at intersections; invented by Garrett Morgan
  5. 9. first device that could record sounds and play them back to a listener; created by Thomas Edison