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10 questions
Friction is the ____________ that one surface exerts on another surface.
gravity
motion
force
What does friction do to the motion of an object?
Friction slows down or stops an object.
Friction keeps an object from moving.
Both of the above
What does the strength of the force depend on? Check the answers that apply.
The types of surfaces
The weather
How hard the surfaces push together
motion
A hard wood floor has more friction than a carpet.
true
false
There are _________ types of friction.
2
1
4
5
Sliding friction is when two _____________ surfaces slide over one another.
liquid
oil
solid
Rolling friction is when an object ___________ over a surface.
bounces
rolls
slides
Fluid friction includes when an object moves through air.
true
false
_____________ friction acts on objects that are not moving.
sliding
rolling
static
fluid
The more friction that there is, the slower an object will move.
true
false
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