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22 Cards in this Set
- Front
- Back
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An object is in motion when it is _____. |
Moving |
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Objects can move in ___ ____. |
Different ways |
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A force is a ____ or _____ that makes something move. |
Push , pull |
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An object's motion can be changed by a ____. |
Force |
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Gravity is a force that _____ _____ _____. |
Pulls things down |
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Gravity keeps you on ___ _____. |
Earth's surface |
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You do work when you use a ___ to ____ an object. |
Force, move |
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No work is done if an object does not ____. |
Move |
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The amount of work you do depends on how much ____ you use and how ____ the object _____. |
Force, far, moves |
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A stronger force makes an object move _____. |
Farther |
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More force is needed to make a _____ object move as far as a ____ object. |
Heavier, lighter |
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The force that makes objects ____ ____ is called friction. |
Slow down |
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Friction causes _____. |
Heat |
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A tool that makes work easier is a _____. |
Machine |
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A simple machine has ___ or ___ moving parts. |
Few, no |
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The six simple machines are the ____, ___ ___, ___ , ____, ______,and the ___ and ______. |
Screw, inclined plane, pulley, wedge, lever, wheel, axle. |
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The body parts of some animals act like ___ ____. |
Simple machines |
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Magnets are objects that can push or pull some _____. |
Metals |
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A magnet attracts metal when it _____ the metal toward itself. |
Pulls |
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A magnet repels metal when it _____ the metal away. |
Pushes |
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A magnet will attract an object made of _____. |
Iron |
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A magnet can be used to move some metal objects without ___ ____. |
Touching them |
