science words 8-16
Across
- 2. a ramp that goes around a post
- 3. and axe when a rod turns a wheel
- 6. plane a ramp
- 7. a pole or stick that is used to push something up
- 8. machine when you put two simple machines together to make a new machine
Down
- 1. looks like a ramp but it moves
- 2. machine a tool that does work with one movement
- 4. how well a machine does work
- 5. when a rope fits in a wheel and is used to lift something up