Machines Crossword: 4°

1. point where a lever turns
2. make something move up
4. used to slow down or stop movement
5. inclined plane wrapped around a pole
8. object to be moved which exerts a force
9. it is produced by the movement of electrons their movement produces electricity
11. electricity supply to a house from a power station
14. simple machine consisting of a rigid bar with a pivot, used for moving things
16. strong, thick string made of fibres twisted together
17. what you use to turn a screw
19. a ramp used to lift and lower objects
20. make something move down
21. a circular object that revolves on an axle

1. simple machine consisting of a wheel and axle and a rope, used for lifting things
3. they make work easier by reducing the effort needed
6. force applied to a lever to make it work
7. container that converts chemicals into chemical energy, used as a power source
10. wheels with teeth that connect together to increase the power of force in machines
12. a rigid bar that goes through a wheel to help it stay in place
13. thin space on a wheel to keep the rope in place simple machine consisting of a ramp, used for lifting and lowering objects
15. two inclined planes back to back, for example, an axe
18. a power tool used to make holes