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If a surface is rough there will be more friction.
 
true
 
false
A smooth surface will has more friction.
 
false
 
true
A slide has _____ friction.
 
low
 
high
If an object is light there will be less friction.
 
true
 
false
If an object is heavy there will be more friction.
 
true
 
false
Did it stop quickly?
 
high friction
 
low friction
 
gravity
Did it go far?
 
low friction
 
high friction
Gravity keeps ________ orbiting around the Sun.
planets
When the ball slides and stops it is _____.
friction.
It is ______ if I drop a ball.
gravity
An object can change its motion from rolling friction into....
Sliding friction
Type of friction force that happens when a body moves through water.
Fluid resistance
What is the thing that keeps everything on Earth from flying into the air?
The force of Gravity (not friction!)
... is the force of gravity on a person or object at the surface of a planet.
Weight
What is a force?
A push or pull applied to an object.
True or False: Friction allows us to grip objects and to stand up.
True.
True or False: Lighter objects require less force to stop than heavier objects.
True.
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.
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.
True or False: Friction speeds up moving objects.
False: Friction slows down moving objects.
... takes place when an object touches other object.
Friction
What is the type of force when 2 surfaces rub together?
Friction
True or False: Heavier objects require more force to move and stop.
True