Friction - Grade 3
Presentation
•
Physics
•
2nd - 3rd Grade
•
Medium
Standards-aligned
Dwi Febriana
Used 88+ times
FREE Resource
7 Slides • 13 Questions
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by Dwi Febriana
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3
Friction is a force* that slows things down.
When two surfaces come in contact with one another, there is a frictional force. The amount of friction depends on a number of factors.
Rougher surfaces create more friction than smooth surfaces. It is a lot easier to ride a bike on a newly paved road than on a dirt trail. The weight of an object pushing on the surface causes friction. The amount of surface in contact with another surface also affects the amount of friction. For example, wheels reduce the amount of surface contact.
4
Friction between solid surfaces can be increased and decreased.
In which way?
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Friction is increased when more pressure is applied to the surfaces and when the materials/surfaces used are more rough.
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8
Multiple Choice
Which of these best describes friction?
A rubbing force.
Something that is slippery.
Gravity.
Movement across a smooth surface.
9
Multiple Choice
What does friction produce?
light
sound
heat
gravity
10
Multiple Choice
Which of these materials do you predict would have the MOST amount of friction
Metal
Tile
Sand Paper
Denim
11
Multiple Choice
How does friction affect speed?
more friction decreases speed
more friction increases speed
less friction decreases speed
12
Multiple Choice
The rougher the surface, the faster an object will travel over the surface.
True
False
13
Multiple Choice
Friction is a force that acts in an ___________ direction of movement.
similar
opposite
parallel
west
14
Multiple Choice
A puck slides along an icy surface. What makes it slow down?
It runs out of push
It rubs against the ice
It runs out of electricity
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Multiple Choice
Rougher surfaces have ...
greater friction
less friction
the same level of friction
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Multiple Choice
The amount of friction depends on how hard objects are pressing together.
True
False
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Multiple Choice
Rougher surfaces have ...
greater friction
less friction
the same level of friction
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Multiple Choice
What type of friction is not moving?
static
sliding
fluid
rolling
19
Multiple Choice
Which of the following is an example of friction that is helpful?
Brakes used on a bike
Tires from a car on the road
Tread on the bottom of your shoes
All are examples that are helpful
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Multiple Choice
Which of the following is an example of friction that is harmful?
Pencil marking on paper
Engine parts wearing out
sand placed on ice in the winter
Using an eraser to erase marks
by Dwi Febriana
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