Understanding Weathering Processes

Which of the following is an example of weathering caused by water?

• A tree root growing into a rock

• A rock being smoothed by a river

• A rock being blown by the wind

• A rock being heated by the sun

How does ice contribute to the weathering of rocks?

• By melting and washing away soil

• By expanding in cracks and making them larger

• By blowing small particles against rocks

• By carrying rocks downstream

What role do plant roots play in the weathering process?

• They protect rocks from weathering

• They grow into cracks and make them larger

• They dissolve rocks with acid

• They cover rocks with soil

Which of the following best describes how wind causes weathering?

• Wind carries water that freezes in cracks

• Wind blows small particles against larger rocks

• Wind heats rocks causing them to expand

• Wind plants seeds that grow into rocks

What is the main cause of weathering along a beach?

• Wind carrying small rocks

• Waves carrying sand and shells

• Ice expanding in rock cracks

• Plant roots growing into rocks

Why do rocks in rivers become smooth over time?

• They are heated by the sun

• They are rubbed together by moving water

• They are covered by plant roots

• They are frozen by ice

Which process is most likely to cause a large rock to split apart over time?

• Wind blowing sand against it

• Water freezing and expanding in its cracks

• Sunlight heating it during the day

• Animals walking over it

How do waves contribute to the weathering of rocks on a beach?

• By carrying rocks away from the shore

• By depositing new rocks on the shore

• By carrying sand and shells that wear down rocks

• By freezing and expanding in rock cracks