Increasing and Decreasing

Question 1

How can friction be increased?

Answer 1

Friction may be increased by increasing the roughness of the surface.

Question 2

How may friction be decreased?

Answer 2

Friction may be decreased by making the surface smooth.

Question 3

You are struggling to open a water bottle, in which you put a cloth on the bottle cap to make it easier to open it. Did you increase or decrease the friction?

Answer 3

You increased the friction.

Question 4

Your floor was quite rough so you decided to use floor wax on it to make it more smooth. Did you increase or decrease the friction?

Answer 4

You decreased the friction.

Question 5

You got out of the shower but now your floor tiles are wet. You place a soft mat on the floor. Did you increase or decrease the friction?

Answer 5

You increased the friction.

Question 6

When you go down a slide, you have difficulty sliding down. How can you lessen the friction between you and the slide?

Answer 6

I will lubricate it with oil.