SCIENCE (FRICTION)

1. Why do drivers drive their car slowly during rainy days?

• A. Drivers drive slowly because the windshield is blurred.

• B. Drivers drive slowly because they are afraid of the rain

• C. Drivers drive slowly because the road is wet so there is less friction.

• D. Drivers drive slowly because the road is wet so there is more friction.

2. Which is NOT a way of reducing friction?

• A. applying lubricant

• B. putting spikes on tires

• C. making the floor smooth

• D. putting grease on bicycle gears

3. Why do you need to put rollers under the cabinets when you want to move them?

• A. to apply more force

• B. to stop the movement of the cabinet

• C. to slow down the movement of the cabinet

• D. to minimize friction through the small surface of contact of the rollers.

4. Why do badminton players use rubber shoes while playing?

• A. to slide since the badminton court is slippery

• B. to glide faster since the badminton court is slippery

• C. to have lesser friction between their shoes and the floor.

• D. to have greater friction between their shoes and the floor.

5. Which of the following situations shows that friction is increased?

• A. Ana uses rubber shoes while jogging.

• B. Ruben puts rollers on heavy cabinets.

• C. Naldo puts grease on his bicycle gears.

• D. Belle puts floor wax to make the floor smooth.

6. In which of the following situations would friction most likely pose a problem?

• A. holding a pen to write

• B. striking a match to cook

• C. walking on a slippery floor

• D. rubbing your hands to warm them

7. Which of the following shows that friction could be harmful?

• A. writing on the board

• B. holding a piece of paper

• C. tearing out of bicycle gears

• D. using breaks when stopping

8. How do you describe the friction between a surface and an object with greater surface area?

• A. greater

• B. equal

• C. smaller

• D. the same

9. A crumpled and an uncrumpled paper were dropped at the same height and time, which paper will reach the ground first?

• A. The crumpled paper because it has a smaller surface area.

• B. The uncrumpled paper because it has a bigger surface area.

• C. Crumpled paper because it is heavier compared to the uncrumpled paper.

• D. None, because both the crumpled and uncrumpled paper have same masses.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

10. A boy is playing with a toy car. In which surface will it travel faster?

• A. cemented floor

• B. carpeted floor

• C. grassy surface

• D. polished floor

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2