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FRICTION FORCE GRADE 4
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Which would create more friction? metal of carpet
carpet
Which activity has less friction? skating or rock climbing
skating
Which surface creates the most friction with skateboard? (Grass. Wood, Stone)
Grass
True or False? Friction speeds up moving objects.
False: Friction slows down moving 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.
What is the thing that keeps everything on Earth from flying into the air?
Gravity (not Friction)
Which things make a greater friction?
 
both these factors
 
type of surfaces (rough or smooth)
 
The weight of an object (how heavy it is)
If there is too much friction, Nothing will move. True or False?
True
Friction makes it easier to slide heavy objects across the floor-True or False?
False
Lighting a matchstick using a match box is not an example of friction-True or False?
False
Friction between eraser and paper helps us to erase pencil marks-True or False
True
When there's friction between two objects, the objects become cold. True or False?
False
Friction between an object and a surface usually stops or slows down the object. True or False?
True
It is easier to cycle on a road than on a grassy field. True or False
True
Rougher surfaces have MORE or LESS? friction.
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