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MC 4th Grade Vocabulary words for Forces and Motion

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Question
Answer
The rubbing together of two objects or surfaces that are touching is called?   Friction  
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Any change in position is called?   Motion  
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The force that pulls an object toward the center of the earth is?   Gravity  
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Forces needed to make an object move or change position are?   unbalanced  
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The tendency of an object to remain in motion or at rest is ?   inertia  
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The unit used to measure force.   Newton  
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Motion described in relation to a frame of reference is?   relative motion  
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An objects place in comparison to another place.   position  
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All of the things around you that you can sense and use to describe motion are your?   frame of reference  
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Forces that do NOT cause an object to change speed or position.   Balanced  
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Measure of an objects change in position during a unit of time.   Speed  
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A push or pull.   Force  
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Any change in speed or direction of an objects motion.   Acceleration  
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Measure of the force of gravity on an object.   Weight  
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