What is weathering?

• The breaking down of rocks

• The movement of rocks

• The melting of rocks

• The cooling of rocks

Which type of weathering involves the breaking down of rocks without changing their composition?

• Chemical weathering

• Biological weathering

• Physical weathering

• Volcanic weathering

Which of the following is an example of chemical weathering?

• Ice breaking rocks apart

• Water dissolving limestone

• Rocks falling from a cliff

• Wind blowing sand against rocks

Which agent of weathering causes rusting in rocks that contain iron?

• Wind

• Water

• Oxygen

• Sunlight

What happens when water freezes inside cracks in rocks?

• The rock shrinks

• The rock expands and cracks more

• The rock dissolves

• The rock becomes smooth

Which of the following can break rocks apart through physical weathering?

• Wind

• Water

• Temperature changes

• All of the above

Plants can break rocks through:

• Their leaves absorbing sunlight

• Their roots growing into cracks

• Their stems pushing against rocks

• Their flowers attracting insects

What type of weathering is caused by acid rain?

• Physical weathering

• Biological weathering

• Chemical weathering

• None of the above

Which of the following is an example of biological weathering?

• Waves washing over rocks

• Ice cracking rocks

• Roots breaking rocks

• Wind carrying sand

How does wind cause weathering?

• By blowing rain onto rocks

• By carrying sand that grinds rocks

• By changing the temperature of rocks

• By pushing rocks down hills