1. Which of the following statement about friction is true?
A. Friction opposes motion of objects.
B. Friction occurs between non-rubbing surfaces.
C. Friction causes moving objects to move faster.D. Friction acts in a direction similar to the
direction of an object's motion.
2. Will it be easy for Marielle to push the table on a carpeted floor?
A. No, because the carpeted floor is rough, so friction is lesser.
B. No, because the carpeted floor is rough, so friction is greater
C. Yes, because the carpeted floor is smooth, so friction is lesser.
D. Yes, because the carpeted floor is smooth, so friction is greater.
3. When can we say that friction on the floor is greater?
A. if the floor is wet B. if the floor is tiled C. if the floor is rough D. if the floor is smooth
4. Which force causes a rolling ball to stop after a few seconds?
A. friction
B. gravity
C. magnetic
D. motion
5. It is difficult to move heavy objects on a rough surface because .
A. rough surface is slippery
B. there is no friction on a rough surface
C. there is lesser friction on a rough surface D. there is greater friction on a rough surface
6. When you are travelling along the road, how does the wet road affect friction?
A. It increases friction.
B. It decreases friction.
C. It maintains friction.
D. It increases and decreases friction.
7. Which of the following forces causes objects to slowdown and eventually stop?
A. air resistance
B. friction
C. gravity
D. magnetic
8. Friction between two objects is always directed
A. toward the direction of objects motion B. similar to the direction of objects motion
C. opposite to the direction of objects motion D. perpendicular to the direction of objects motion
9. Which activity below needs less friction?
A. grinding
B. skating
C. climbing
D. writing
10. Which activity is a way of reducing friction?
A. applying lubricant B. using rubber shoes
wheels on heavy cabinets
C. putting spikes on tires D. removing


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