Force and Motion - 3rd Grade

Front

What is an unbalanced force?

Back

An unbalanced force is when two forces acting on an object are not equal in size, 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 in size and opposite in direction, causing the object to stay still or move at a constant speed.

Front

What type of force pulls objects towards each other?

Back

Gravitational force pulls objects towards each other.

Front

What is friction?

Back

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

Front

What is a magnetic force?

Back

A magnetic force is the attraction or repulsion between magnetic poles.

Front

What happens when forces are balanced?

Back

When forces are balanced, the object does not change its motion.

Front

What happens when forces are unbalanced?

Back

When forces are unbalanced, the object will start to move or change its motion.

Front

What is an example of gravitational force?

Back

An example of gravitational force is when an apple falls from a tree to the ground.

Front

What is an example of friction?

Back

An example of friction is when you slide your hand across a table and it slows down.

Front

What is an example of a magnetic force?

Back

An example of a magnetic force is when a magnet picks up paper clips.