Force and Motion

Front

What is a force?

Back

A push or pull that can change the motion of an object.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is gravity?

Back

A force that pulls objects toward each other, like the Earth pulling us down.

Front

What is friction?

Back

A force that opposes motion between two surfaces in contact.

Front

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

Back

The object may start moving.

Front

What is mass?

Back

The amount of matter in an object, usually measured in grams or kilograms.

Front

What tool do we use to measure mass?

Back

A pan balance.

Front

What type of surface has less friction?

Back

Smooth surfaces.

Front

On which surface will a toy car travel the furthest?

Back

Ice.

Front

What is the effect of a larger force on an object?

Back

It can cause a greater change in motion.