. Any two objects rub against each other cause ______________. *
1 point
A. Gravity
B. Friction
C. Force
D. Energy
2. Which has the greatest friction? *
1 point
A. polished floor
B. sandy floor
C. wet floor
D. tiled floor
3. Which of the following statements best describes friction? *
1 point
A. force that occurs between solids
B. force that occurs in smooth surfaces
C. it is forces that occurs between solids and liquids
D. force that occurs when surfaces touch each other.
4. How can you best reduce friction between the bottom or feet of the furniture and the floor? *
1 point
A. By smoothing the floor
B. By keeping the furniture on its place
C. By applying the lubricants like wax on the floor
D. By putting the wheels or rollers on the bottom or feet of furniture.
5. Which of the following is an example of increasing friction? *
1 point
A. Polishing floor
B. Waxing the underneath ski
C. Squirting oil into the hinge
D. Spreading sand on wet road
6. A friction between two objects that is strong enough which doesn’t allow them to move. *
1 point
A. Static friction
B. kinetic friction
C. sliding friction
D. rolling friction
7. The force between a roller or a wheel and the surface which it is contact with. *
1 point
A. sliding friction
B. B. rolling friction
C. kinetic friction
D. static friction
8. The boat sailing at sea slows down. What kind of friction is acting on it? *
1 point
A. Static friction
B. Rolling friction
C. .Fluid friction
D. Sliding friction
9. Friction is defined as a skidding or sliding motion between two surfaces. *
1 point
A. Static friction
B. kinetic friction
C. sliding friction
D. rolling friction
10. Which shows that friction is undesirable? *
1 point
A. pushing furniture
B. lightning matchstick
C. Walking in the wet floor
D. using breaks when using stoplight
11. What is the direction of the frictional force that acts on an object moving to the left? *
1 point
A. upward
B. downward
C. into the glass
D. away from the glass
12. Which of the following shows the presence of friction? *
1 point
A. cars continuously roll down the hills
B. things fall off on smooth surfaces
C. people stay in place as they move
D. cars stop when the driver steps on the breaks.
13. The boat sailing at the sea slows down. What kind of friction is acting on it? *
1 point
A. it is the force that occurs between solids
B. It is force that only on rough surfaces
C. it is a force that occurs between solid and liquid
D. it is a force that occurs when touch each other.
14. A boy is playing with a toy sledge. In which surface it will travel fastest? *
1 point
A. carpet
B. Rough floor
C. wet floor
D. polished floor
Share
1. B.
2.B.
3.D.
4.A.
5.D.
6.A.
7.B.
8.A.
9.C.
10.C.
11.?
12.A.
13C.
14.C./D.