Term
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Definition
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Term
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Definition
| the force that pulls objects toward each other |
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Definition
| the amount of matter in an object |
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Definition
| a tool used to measure weight |
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Definition
| a measure of the force of gravity on an object |
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Definition
| a force between two surfaces that are touching, it reduces motion (example: sandpaper) |
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Definition
| a material that reduces friction (examples: baby powder, oil) |
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Definition
| when a force moves an object from one place to another |
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Definition
| friction between a falling object and air |
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Term
| What are the 6 types of simple machines? |
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Definition
1) inclined plane
2) screw
3) wedge
4) lever
5) wheel & axel
6) pulley |
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Term
| What is a lever & give an example? |
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Definition
| a flat, sloping surface (a ramp) |
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Term
| What is a screw & give an example? |
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Definition
| an inclined plane wrapped around a rod (bottle top) |
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Term
| What is a wedge & give an example? |
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Definition
| two inclined planes put together to make a sharp edge (knife or axe) |
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Term
| What is a lever & give an example? |
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Definition
| a simple machine made of a long bar & a fulcrum (seesaw or crowbar) |
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Term
| What is a wheel and axel & give an example? |
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Definition
| A simple machine made of a round object (wheel) that turns a rod (the axel). Examples: door knob or skateboard |
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Term
| What is a pulley & give an example? |
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Definition
| A simple machine made of a grooved wheel with a rope or chain around it (an elevator) |
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Term
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Definition
| The support that a lever turns around |
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Term
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Definition
| The object that a lever moves |
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Term
| What is a simple machine? |
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Definition
| A tool that makes it easier to move objects. |
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Definition
| A wheel with teeth (example inside a clock) |
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Term
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Definition
| a pulley that doesn't move |
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Term
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Definition
| a pulley that is free to move |
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