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