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Friction
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a tool to measure force
 
forcemeter
 
thermometer
Force cannot be measured.
 
True
 
False
Friction acts in the same direction that the object is moving in.
 
False
 
True
Smooth surfaces have no friction at all.
 
True
 
False
Which activity has little friction?
 
skating
 
climbing rocks
Friction ______ car tyres from skidding.
 
stop
 
start
Friction is ________ when it helps us grip the floor with our shoes
 
useful
 
not useful
Friction produces ______, like when you rub your hands together.
 
heat
 
light
The ________ the surface, the stronger the friction.
 
rougher
 
smoother
Friction is the force that acts against you when you try to move something heavy.
 
True
 
False