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10
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What is NOT an example of an object that gets damaged over time by friction?
car tyres
oil (lubrication)
knife
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banana
Go to last place!
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gift
Win 20 points!
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gift
Win 15 points!
Okay!
×
banana
Go to last place!
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10
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How does lubrication work?
The oil stops the surfaces from wearing away
The oil reduces the heat created by friction
The oil fills bumps and hollows to make a smoother surface
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10
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To move two surfaces together quickly (like our hands) is called ____
rud
rub
rup
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10
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Friction usually ________ moving objects.
slows down
destroys
speeds up
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10
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_______ surfaces have a lot of friction
rough
smooth
all
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banana
Go to last place!
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magnet
Take 25 points!
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gift
Win 25 points!
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banana
Go to last place!
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10
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The action that makes that surface of an object disappear is _______
wear out
wore off
wear away
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10
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If we have no friction moving objects have no ______.
gravity
generator
grip
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banana
Go to last place!
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shark
Other team loses 10 points!
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shark
Other team loses 20 points!
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baam
Lose 25 points!
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10
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When is friction a good thing?
Running a race
Pushing a shopping trolley
Skiing on the snow
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10
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Which action creates the MOST friction?
rolling
lubricating
sliding
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