Forces Review

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces rub against each other.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other. It is what makes things fall to the ground.

Front

What are balanced forces?

Back

Balanced forces are forces that are equal in size but opposite in direction. They do not cause a change in motion.

Front

What are unbalanced forces?

Back

Unbalanced forces are forces that are not equal and can cause an object to move or change direction.

Front

What happens when you push a sled down a hill?

Back

The sled moves down the hill because the force of gravity pulls it down, and there is less friction on the snow.

Front

What is magnetism?

Back

Magnetism is a force that can attract or repel certain materials, like iron, and is caused by magnets.

Front

What happens when you put a north pole and a south pole of magnets together?

Back

They attract each other and stick together.

Front

What happens when you put two north poles of magnets together?

Back

They repel each other and push away.

Front

How can you pick up nails from a carpet easily?

Back

You can use a magnet attached to a pole to attract and pick up the nails quickly.

Front

What is an example of a situation with low friction?

Back

Sledding down a hill is an example of low friction because the sled slides easily on the snow.