1) What is friction? a) A type of energy b) A type of force that slows things down c) A type of force that speeds things up 2) Which of these surfaces would create the most friction? a) Smooth glass b) Rough sandpaper c) Wet ice d) hard concrete 3) Which of these objects would experience the most friction when moving? a) A ball rolling on grass b) A ball rolling on a smooth floor c) A ball rolling on hard sand 4) How does friction help us in everyday life? a) It makes things move faster b) It helps us to grip objects c) It makes surfaces smoother 5) Which of these is an example of static (still) friction? a) A car skidding on the road b) Opening a stuck jar lid c) Sliding down a slide 6) True or False: Friction always opposes motion. a) True b) False 7) How can you reduce friction between two surfaces? a) By making the surfaces smoother b) By adding more weight to the objects c) By making the surfaces rougher

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