Across
- 3. They are objects that make it easier for people to do work
- 5. A room or building equipped for scientific experimentation
- 7. The rod that the wheel spins on
- 8. It is a kind of wheel that has a groove for a rope
- 10. A test under controlled conditions
- 12. It can help you lift something heavy or make something go fast
Down
- 1. Capable of igniting and burning
- 2. Loose-fitting trousers
- 4. They are used to cut or push things apart
- 6. A plane of any slope or ramp
- 9. A substance or substances out of which a thing is made
- 11. It is a spiral wrapped around a center post