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Simple Machines
| Term | Definition |
|---|---|
| simple machines | machines that make work easier |
| lever | an simple machine that is comprised of a rigid bar that rotates or pivots on a fixed point |
| fulcrum | a fixed point where rotation or change in motion takes place on a lever |
| screw | a simple machine that is comprised of an inclined plane wrapped around a cylinder |
| wedge | a simple machine that is made of two inclined planes put together |
| wheel & axle | a simple machine made up of two cylinders that rotate on the same axis |
| inclined plane | a simple machine that is made up of a slanted surface |
| pulley | a simple machine that is made of a rope fitted around a fixed wheel |
| gravity | the force that pulls objects towards other objects |
| motion | a change in an object's position as compared to objects around it |
| friction | a force that slows or stops motion between two surfaces. |
| force | a push that moves objects away or a pull that moves objects closer |
| speed and direction | the two properties that describe the motion of an object |
| position | an object's location or place |
| the object changes motion (starts or stops) | What happens when you apply force to an object? |
| walking on the floor; holding a pencil | How is friction useful to us? |
| Objects with greater mass have greater gravity and the Earth has a larger mass than the moon. | How do we know Earth has greater gravity than the moon? |
| Give an example of each simple machine |
Created by:
cynthiamessina
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