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Review Friction
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Did it stop quickly?
gravity
low friction
high friction
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If a surface is rough there will be more friction.
true
false
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Type of friction force that happens when a body moves through water.
Fluid resistance
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Is the friction more or less when the ground is bumpy (not flat)?
More! Smooth flat surfaces have less or no bumps and they make it easier to push objects.
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... is the force of gravity on a person or object at the surface of a planet.
Weight
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True or False: Lighter objects require less force to stop than heavier objects.
True.
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If an object is heavy there will be more friction.
true
false
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A smooth surface will has more friction.
false
true
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What is the type of force when 2 surfaces rub together?
Friction
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A slide has _____ friction.
high
low
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Did it go far?
high friction
low friction
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When the ball slides and stops it is _____.
friction.
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... takes place when an object touches other object.
Friction
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True or False: Friction allows us to grip objects and to stand up.
True.
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True or False: Heavier objects require more force to move and stop.
True
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Gravity keeps ________ orbiting around the Sun.
planets
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It is ______ if I drop a ball.
gravity
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True or False: Friction speeds up moving objects.
False: Friction slows down moving objects.
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If an object is light there will be less friction.
true
false
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An object can change its motion from rolling friction into....
Sliding friction
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Is it easier to stop a bike on a sunny day or a rainy day?
It's easier to brake on a sunny day, ground is slippery on rainy days, so you get less friction = harder to stop.
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What is the thing that keeps everything on Earth from flying into the air?
The force of Gravity (not friction!)
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What is a force?
A push or pull applied to an object.
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