Direction: Write PW if the sentence describes physical weathering and CW if it

describes chemical weathering. Write your answers on the answer sheet.

________1. Roots of trees penetrate and gradually break rocks.

________2. The wind blows sand against rocks and slowly wear them away.

________3. Chemical reactions break down the bonds that hold the rock together.

________4. Acidic water causes the slowly dissolving of the minerals in rocks and

makes the rocks crack.

________5. Worms and other burrowing animals break up rocks as they make tunnels.​