1) Friction is more on smooth surfaces. a) True b) False 2) Friction is the ___ between two surfaces. a) sand b) force c) object 3) Friction moves in the ___ direction of the object moving. a) same b) different c) opposite 4) What will happen to the friction when an item moves on a rough surface? a) Nothing b) It will decrease. c) It will increase. 5) When is having less friction useful? a) ice skating b) driving c) walking 6) Friction always __________________ the speed of a moving object. a) reduces b) increases 7) Smoother surfaces have __________ friction than rougher surfaces. a) more b) less 8) What do you call the type of friction between air and another material? a) air resistance b) force c) water resistance 9) What type of object travels through the air quicker? a) short and wide b) long and thin c) big and wide

Friction and Air Resistance

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