Across
- 3. It was invented in 1903 by the American Wright brothers, brought the world closer together
- 5. Navigational device
- 9. A system of communication consisting of sounds, words, and grammar
- 10. A medicine or chemical that can destroy harmful bacteria in the body or limit their growth
- 11. A circular object connected at the centre to a bar, used for making vehicles or parts of machines move
Down
- 1. It was discovered rather than invented,gave us warmth, protection
- 2. A portable device first invented in 1992
- 4. It is responsible for eradicating diseases and extending the human lifespan.
- 6. It was invented about 100 BC in China, allowing us to write down and share our ideas.
- 7. A short, thin stick made of wood and covered with a special chemical at one end that burns when rubbed firmly against a rough surface
- 8. The large system of connected computers around the world that allows people to share information and communicate with each other