1) The force that acts when we try to push an object along the floor is called _________ a) Friction b) Force c) Push d) Pull e) Opposite 2) Friction works in the __________ opposite direction of the object we are trying to move a) Same b) Opposite 3) Friction is a force between two surfaces that ________________ a) are in contact b) aren't in contact c) are floating 4) Friction..... a) Slows down objects b) Speeds up objects 5) To move an object.... a) We need to apply a less force that the friction force b) We need to apply a greater force that the friction force 6) About the weight of the object.... a) The heavier the object, the more friction b) The heavier the object, the less friction 7) Smooth surfaces.... a) Less friction, easier to move the object b) more friction, harder to move the object 8) Rough surfaces.... a) Less friction, easier to move the object b) more friction, harder to move the object 9) Rollers reduce the force of friction a) True b) False 10) Wheels and axles reduce more the friction that rollers a) true b) false

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