Across
- 1. Thomas Edison invented this
- 4. Surname of the person who invented the telephone
- 5. We can _______ on inventions to make them even better
- 7. The people who invented fireworks
- 8. The ______ brothers invented the first aeroplane
- 9. Machine that keeps things cool and allows food to last longer
Down
- 2. Method used so that blind people can read
- 3. The app that we are using to conduct classes now
- 5. A person who makes inventions
- 6. This is used to make sure no one can copy an inventor's idea
- 8. The first invention in the world