Friction Year 6

Front

Which of the following is NOT a way to reduce friction?

• Use rollers or wheels
• Spray the surface with oil or grease
• Use boric acid powder when play carrom
• Use magnesium chalk powder to lift the metal barbell

Back

Use magnesium chalk powder to lift the metal barbell

Front

Why does a walking shoe have a patterned sole?

Back

To increase the friction between footwear's surface and other surface.

Front

Why is an ice skating shoe designed and made like this?

Back

To decrease friction between ice surface and shoe

Front

What is the advantage of friction?

Back

Allows us holding things

Front

The frictional force_________________ caused the boy to fall.

Back

decrease

Front

What does friction produce?

Back

heat

Front

What is the function of the rollers?

Back

To reduce friction

Front

What is the function of a roller bearing in a bicycle?

Back

Decrease the frictional force

Front

How can you help that boy if you are in the situations?

Back

Use anti-slip mats

Front

Why we use boric acid powder in a carrom game?

Back

To decrease the frictional force