Will a mountain last forever?

The process where seeds fall in cracks and can split rocks with its roots is called

• root breaking.

• root splitting.

• root wedging.

Why would the Mayans have swept/cleaned the brick cracks in their pyramids?

• They want to prevent dirt from drying in the cracks.

• They want to prevent seeds from growing in the cracks.

• They want to prevent small animals from making homes there.

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The process where frozen water splits rock is called

• ice splitting.

• ice breaking.

• ice wedging.

How does water break a rock?

• Water takes up more room than ice so when the ice melts, the rock splits.

• Ice takes up more space so when water freezes, it splits the rock.

• Ice makes the rock very cold and brittle so the rock breaks more easily.

Which is more powerful?

• Ice wedging is more powerful.

• Root wedging is more powerful.

• They are equally powerful.

Why might the top of mountains break apart?

• It’s more windy so the rocks will break more quickly.

• There are more seeds at the top so root wedging is more common.

• It’s colder at the top of a mountain so ice wedging is more common.

Do mountains last forever?

• Yes.

• No.

• No one knows because humans don’t live forever to know for sure.

Rocks at the top of a mountain are

• smoother.

• more jagged.

• smaller.

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What is it called when mountain rocks break down into smaller pieces?

• breaking

• wedging

• falling

• weathering

Gravity can cause erosion.

• True

• False