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Force and Motion Vocabulary
Benchmark Study Guide
15
Science
4th Grade
02/23/2011

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Cards

Term
Acceleration
Definition
A change in speed or direction of an object's motion
Term
Friction
Definition
Keeps objects that are touching each other from sliding past each other.  It is a force, which resists motion between objects that are in contact.
Term
Gravity
Definition
The force Earth exerts on all objects on or near it.
Term
Potential Energy
Definition
The energy of objects due to their position of condition.
Term
Kinetic Energy
Definition
Energy in motion
Term
Motion
Definition
A change in position.  It is a FORCE!
Term
Speed
Definition
A measure of an object's change in position during a unit of time.
Term
Wheel and Axle
Definition
A simple machine made up of a large wheel attached to a smaller wheel or rod.
Term
Work
Definition
Is done on an object when a force moves the object through a distance.
Term
Mass
Definition
The amount of matter in an object.
Term
Circular Motion
Definition
Motion that goes around and around
Term
Newtons
Definition
A unit of measure describes the gravitational pull of the earth on an object. (spring scale)
Term
Balance
Definition
Is a tool used to measure mass. (weight)
Term
Independent Variable
Definition
What is being changed in the experiment.
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