2nd Unit 5 Changes on Earth

How does wind cause weathering to rocks?

• Wind moves rocks

• Wind makes rocks wet

• Wind blows sand against rocks

What caused this arch to form over a long period of time?

• a glacier

• a hurricane

• water

Each winter, water freezes in the cracks of this rock. How does this rock cause weathering to the rock?

• Ice makes the cracks in the rock bigger each year

• Ice makes the cracks in the rock thinner each year

• Ice makes the cracks in the rock darker each year

Which can cause erosion. Choose all correct answers.

• Wood can cause erosion

• Wind can cause erosion

• Water can cause erosion

Which changes Earth's surface quickly? Choose all correct answers.

• flood

• volcano

• weathering

What is one effect of a volcano?

• It causes a hurricane

• It floods the land with water

• It covers the ground nearby with ash and dust

A farmer planted a row of trees at the end of a field. What does this farmer hope to prevent?

• water from flooding the field

• wind from blowing away soil

• lava from covering the field

Which items can you use to build something that will slow or stop a flood? Choose all correct answers.

• Empty sandbag

• Concrete Cinder Block

• Pile of Builders Sand

A process that breaks rocks into smaller pieces is called _____________.

• weathering

• erosion

• breaking down

Weathering by wind is a ____________ change.

• Slow

• Fast