Invisible Forces Review 2024

Front

What is a force?

Back

A force is a push or pull that makes an object move.

Front

What shape do arch bridges use?

Back

Arch.

Front

What is friction?

Back

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

Front

Which surface has the most friction: icy road, rocky road, or wet road?

Back

A rocky road has the most friction.

Front

What is a model?

Back

A model is a smaller version or representation of something real.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, like the Earth pulling us down.

Front

What happens to friction when ice skating compared to roller skating?

Back

There is less friction when ice skating than when roller skating on the street.

Front

What is motion?

Back

Motion is the change in position of an object over time.

Front

What is an example of a force?

Back

Pushing a door open is an example of a force.

Front

What does it mean to pull?

Back

To pull means to apply a force to move something closer to you.