## Science Chapter 10 Test

##### Created by:

classof2012letsdothis  on November 15, 2011

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# Science Chapter 10 Test

 Forcea push or a pull exerted on an object
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#### Definitions

Force a push or a pull exerted on an object
Newton The SI unit used for the magnitude or strength of a force
Net Force The overall force on an object when all the individual forces acting on it are added together
Unbalanced Forces Forces that cause an object's velocity to change
Balanced Forces Equal forces acting on an object's velocity to change
Friction The force that one surface exerts on another when the two surfaces rub against each other
Static Friction Friction that acts on objects that are not moving
Sliding Friction Friction that occurs when one solid surface slides over another
Rolling Friction Friction that occurs when an object rolls over a surface
Fluid Friction Friction that occurs as an object moves through a fluid
Gravity The force that pulls objects toward each other
Mass A measure of how much matter is in an object
Weight A measure of the force of the gravity on an object
Free Fall The motion of a falling object when the only force acting on it is gravity
Air Resistance The fluid friction experienced by objects falling through the air
Projectile An object that is thrown
Compression An elastic force that squeezes or pushes the molecules in matter together
Tension An elastic force that stretches or pulls on the molecules in matter
Inertia The tendency of an object to resist any change in it's motion
Momentum The product of an object's mass and velocity
Law of Conservation of Energy The rule that energy cannot be created or destroyed, it can only be transfered and transformed.
Satellite Any object that orbits around another object in space
Centripetal Force A force that causes an object to move in a circle

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