Friction
Quiz by Simi Lakshmi
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- Q1
Friction is an invisible _____.
direction
object
force
30s - Q2
Substances applied to surfaces to reduce friction between surfaces are called __.
opponents
contacts
lubricants
30s - Q3
True or False. Friction is a force between objects that are in contact.
False
True
30s - Q4
Moving furniture across a rug would produce cause ______ friction.
more
less
30s - Q5
Rolling a cart instead of sliding it would _____ friction.
reduce
increase
30s - Q6
Which is an example of a bad friction?
tire worn down
stopping tires from skidding
the brakes on your bike
30s - Q7
Which one is an example of useful friction?
engine heating up
wearing material away
stopping us from sliding
30s - Q8
What is the red arrow showing?
friction
pushing force
gravitational force
30s - Q9
True or False. The greater the friction is, the faster the movement will be.
False
True
30s
