Across
- 2. A curved structure that supports weight over an open space
- 5. The use of scientific principles to design and build machines or structures
- 7. A system of toothed wheels that fit together to transfer motion and force
- 10. A type of energy stored due to an object's position or condition
Down
- 1. The force that resists motion when two surfaces rub together
- 3. A circular object that rotates around an axle to reduce friction
- 4. A type of simple machine shaped like a triangle, used to split objects
- 6. The force that pulls objects toward the center of the Earth
- 8. A structure that helps people cross over obstacles like rivers
- 9. A simple machine that consists of a wheel with a rope wrapped around it