Force and Motion (3rd Grade)

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created 8 years ago by mgort
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updated 8 years ago by mgort
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3rd grade
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1

force

a push or pull that moves things from one place to another

2

friction

the rubbing of one object or surface against another

3

speed

how fast something is moving

4

gravity

the force that attracts/pulls an object toward the center of the earth

5
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wedge

a simple machine such as a piece of wood, metal, or some other material having one thick end and tapering to a thin edge

6
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wheel and axle

a simple machine that has a large wheel connected by a smaller cylinder and is fastened to the wheel so that they turn together

7
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inclined plane

a simple machine that has a slanting surface connecting a lower level to a higher level

8

push

the act of applying force in order to move something away

9

pull

the act of applying force to move something toward or with you

10
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lever

a simple machine that includes a rigid bar which pivots about a fulcrum

11
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screw

a simple machine that includes an inclined plane which wraps around a cylinder

12
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pulley

a simple machine that uses grooved wheels and a rope to raise, lower or move an object