What is friction?
Friction is when two surfaces touch each other. A rough surface creates a lot of friction whereas a smooth surface creates less friction. For this reason, roads are rough to help cars slow down. Have you ever walked on ice? It is very hard to stop sliding as ice has a smooth surface and very little friction.
Know this about friction we can create rough surfaces to stop us slipping, like on the bottom of your shoes, or we can create smooth surfaces like a snooker ball on a table.
Friction also produces heat. Rub your hands together. Are your hands getting hot? Your hands are creating friction so your hands will start to fill warm.
What is Friction?Friction is a force between two surfaces that are sliding, or trying to slide, across each other. Watch the video then test your knowlege.
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