Unit D -

1. a group of parts that work together to preform a function
3. a combination between 2 wheels with different diameters
5. the force that is applied from the machine to an object
7. - a tool that is made up of one basic machine
12. uses wire, a rope or a cable to PULL things easier
13. - a structure helps use do our work easier
15. a term that is used to explain that using a simple machine helps apply force to move an object
17. essential part of most machines
19. the physical form of an object/device that makes it usable
21. the measure of the amount force is applied to an object
22. like in a bike, a group of parts that help it do a specific function such as breaking or steering
23. a simple machine that is forced into an object.(hint: knife)

2. transfers energy from an engine to the wheels
4. measurement of how well a machine uses energy
6. a tool made out of several different types of simple machines
7. the speed of an object
8. a type of simple machine that is a ramp which makes it easier to lift objects then lift them straight up
9. a force that applies motion
10. a machine that uses liquid under pressure to move load
11. transfers your energy to do a specific function
14. a cylinder with a groove cut with a spiral around it
16. - a rigid bar or plank that rotates on a fixed point known as a fulcrum
18. force that is applied to the machine
20. when pressure is applied on an object it travels in all directions
23. when force acts on an object to make it move