Understanding Friction

Understanding Friction

Assessment

Interactive Video

Physics, Science

5th - 8th Grade

Practice Problem

Hard

Created by

Lucas Foster

FREE Resource

The video tutorial explains friction as a force that prevents slipping by acting between surfaces in contact. It highlights how friction varies based on surface texture and contact force, using examples like bicycle brakes. The video also discusses how reduced friction, such as on wet surfaces, can lead to accidents. An experiment is suggested to observe friction differences on various surfaces.

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary role of friction in our daily lives?

To enhance color

To reduce noise

To prevent slipping

To increase speed

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which factor does NOT affect the amount of friction between two surfaces?

Texture of the surfaces

Type of material

Color of the surfaces

Contact force between the surfaces

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does a bicycle slow down when brakes are applied?

Due to engine power reduction

Because of gravity

Because of friction between brakes and wheels

Due to air resistance

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which object would experience the least friction on a glass table?

Rubber ball

Eraser

Coin

Ice cube

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to friction when a floor is wet?

It disappears completely

It increases

It decreases

It remains the same

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are accidents more common during monsoons?

Due to stronger winds

Because of poor visibility

Due to reduced friction from wet surfaces

Because of increased traffic

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of water on the contact between wheels and the ground?

Increases contact

Changes the direction of contact

Decreases contact

No effect

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