Simple Machines
Vocabulary
1. Simple Machine: one of six tools that make work easier
2. Machine: a device for doing some kind of work
3. Compound Machine: more than one simple machine working together
4. Lever: a stiff bar that moves on a fixed point called a fulcrum, used to lift or move heavy objects. There are first, second and third class levers.
First class lever: effort, fulcrum, load Second class lever: effort, load, fulcrum Third class lever: load, effort, fulcrum
2. Machine: a device for doing some kind of work
3. Compound Machine: more than one simple machine working together
4. Lever: a stiff bar that moves on a fixed point called a fulcrum, used to lift or move heavy objects. There are first, second and third class levers.
First class lever: effort, fulcrum, load Second class lever: effort, load, fulcrum Third class lever: load, effort, fulcrum
5. Wheel and Axle: a wheel that turns on a center post or rod, used to move objects or change power, speed, or direction of movement
6. Pulley: a wheel with a groove that a rope fits into, used to lift or move objects
7. Inclined Plane: a sloping surface connecting a lower surface with a higher surface, used to move heavy loads up or down
8. Screw: an inclined plane wrapped around a shaft, used to hold objects together or lift objects
9. Wedge: two inclined planes put together to form a v-shape, used to split, separate, or raise an object
10. Energy: ability to do work
11. Force: a push or pull on an object that causes it to change direction, move or stop
12. Motion: movement
13. Friction: a rubbing force of one object against another causing movement to slow down.
14. Gravity: the force of one object pulling on another
15. Work: the result of a force moving an object work = effort force x distance
16. Effort: the amount of energy exerted
17. Distance: the amount of area an object will move
18. Load: the amount of weight that needs to be moved
19. Gears: a wheel with teeth, one gear connects to and turns another
20. Fulcrum: part of a lever that supports length of bar
6. Pulley: a wheel with a groove that a rope fits into, used to lift or move objects
7. Inclined Plane: a sloping surface connecting a lower surface with a higher surface, used to move heavy loads up or down
8. Screw: an inclined plane wrapped around a shaft, used to hold objects together or lift objects
9. Wedge: two inclined planes put together to form a v-shape, used to split, separate, or raise an object
10. Energy: ability to do work
11. Force: a push or pull on an object that causes it to change direction, move or stop
12. Motion: movement
13. Friction: a rubbing force of one object against another causing movement to slow down.
14. Gravity: the force of one object pulling on another
15. Work: the result of a force moving an object work = effort force x distance
16. Effort: the amount of energy exerted
17. Distance: the amount of area an object will move
18. Load: the amount of weight that needs to be moved
19. Gears: a wheel with teeth, one gear connects to and turns another
20. Fulcrum: part of a lever that supports length of bar
Materials in your study kit.