I. Read and select the letter of the correct answer.
1. Which of the following may cause changes in the size, shape and movement of an object?
A Light
C. Force
B. Matter
D. Energy
2. Why does a jeepney travel faster on a cemented road than on a bumpy road?
A. There is less friction on smooth surfaces, thus the jeepney can move faster.
B. There is more friction on smooth surfaces, thus the jeepney can travel faster
C. When the surface is rough, there is less friction, thus the jeepney move faster
D. There is more friction on rough surfaces, thus the jeepney can move faster.
3. Which of the following is a rolling friction?
A. bowling
C. ice skating
B. running
D. gliding
4. Why can a bus going down a mountain road travel faster than going up?
A. It is helped by gravity
C. Downward pressure is increasing
B. There is less friction going down D. It is helped by the speed of the wind
5. What type of friction occurs when an object falls through the air?
A fluid friction
C. sliding friction
B. rolling friction
D. static friction
6. Why is a speed of 10 kph required at busy places or school zones?
A to economize fuel
B. to prevent damage to vehicles
C. to prevent vehicles from bumping one another
D. to keep the children safe from vehicular accidents
7. Objects that are tossed upward eventually fall down, what principle will best explain this?
A. Principle of energy conservation
C. Principle of acceleration
B. Principle of gravity
D. Principle of friction
8. Which has the greatest friction?
A. polished floor
B. rough floor
C. wet floor
D. tiled floor
9. The boat sailing on the sea slows down. What kind of friction is acting on it?
A static friction
C. fluid friction
B. rolling friction
D. sliding friction​