Friction

Friction occurs when two surfaces rub against one another. True or False

• True

• False

More friction is always an advantage. True or False?

• True

• False

Is sliding on a wet floor an example of more friction or less fricition?

• More friction

• Less friction

Is opening a rusted old door an example of more friction or less fricition?

• More Friction

• Less Friction

In an experiment, if you slide the same object over both a rough and a smooth surface, which surface will likely show a quicker stop of the object?

• The smooth surface

• The rough surface

• Both will stop at the same time

• It depends on the weight of the object

Tags

DOK Level 2: Skill/Concept

Charlotte is conducting an experiment by sliding a toy car over two different surfaces: a carpet and a tiled floor. On which surface will the toy car likely come to a stop more quickly?

• The tiled floor

• The carpet

• Both will stop at the same time

• It depends on the weight of the toy car

Tags

DOK Level 2: Skill/Concept

What is the effect of friction on a moving object?

• It increases its speed

• It decreases its speed

• It has no effect

• It changes its direction

Answer explanation

Friction opposes the motion of a moving object, causing it to lose energy and slow down. Therefore, the correct answer is that friction decreases its speed.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

How does friction play a role in sports like basketball or soccer?

• It helps the ball to bounce higher

• It slows down the ball when it rolls

• It allows players to change direction quickly

• It makes the ball lighter

Tags

DOK Level 2: Skill/Concept

Is rolling a ball on ice an example of more friction or less fricition?

• More Friction

• Less Friction

Is a car travelling on a rocky road an example of more friction or less fricition?

• More Friction

• Less Friction