Understanding Erosion and Glaciers

What is erosion?

• Building new rocks

• Moving soil, rocks, or sand

• Stopping wind and water

What causes erosion?

• Wind, water, and glaciers

• Clouds and sunlight

• Plants and animals

What happens to sand when waves wash it away?

• It becomes bigger

• It moves to another place

• It turns into soil

What is a glacier?

• A big piece of ice that moves

• A frozen river that never moves

• A pile of sand in a desert

How do glaciers cause erosion?

• By picking up and moving rocks and soil

• By melting and creating rain

• By stopping wind

What does wind do to sand in a desert?

• Builds new rocks

• Blows it to different places

• Makes the sand wet

What happens when rainfall carries mud into a river?

• Erosion occurs

• Rocks form

• The mud disappears

What can waves at a beach do to sand?

• Carry it away

• Make it heavier

• Stop it from moving

How can erosion change the land?

• By adding more rocks

• By shaping the land over time

• By keeping soil in one place

What do glaciers sometimes create when they move soil?

• Rivers

• Islands

• Deserts