Friction

Front

What is friction?

Back

Friction is a force that opposes the movement of two surfaces that are in contact.

Front

What does friction produce?

Back

Friction produces heat.

Front

Which material has the most friction: Metal, Tile, Sand Paper, or Denim?

Back

Sand Paper has the most friction.

Front

What direction does friction act in?

Back

Friction acts in the opposite direction of movement.

Front

How does more friction affect speed?

Back

More friction decreases speed.

Front

What happens when surfaces are rougher?

Back

Rougher surfaces have greater friction.

Front

What is an example of a surface with low friction?

Back

Ice is an example of a surface with low friction.

Front

What is an example of a surface with high friction?

Back

Sandpaper is an example of a surface with high friction.

Front

What can we feel when we rub our hands together quickly?

Back

We can feel heat produced by friction.

Front

What happens to a toy car on a smooth surface compared to a rough surface?

Back

The toy car moves faster on a smooth surface due to less friction.