Force and Motion - 3rd Grade

Front

What is a force?

Back

A force is a push or pull on an object.

Front

True or False: An object will not come to rest or begin to move unless a force acts on it.

Back

True

Front

What is gravity?

Back

Gravity is the force on Earth that pulls objects down.

Front

What is an unbalanced force?

Back

An unbalanced force is when two forces acting on an object are not equal, causing the object to move.

Front

What is a balanced force?

Back

A balanced force is when two forces acting on an object are equal, causing the object to stay still.

Front

What is friction?

Back

Friction is a force that opposes motion between two surfaces that are in contact.

Front

What is a push?

Back

A push is a type of force that moves an object away from you.

Front

What is a pull?

Back

A pull is a type of force that moves an object closer to you.

Front

What happens when a force is applied to an object at rest?

Back

The object will start to move.

Front

What happens when a force is applied to a moving object?

Back

The object's speed or direction may change.