Weather & Erosion

How is erosion different from weathering?

• erosion is slower

• erosion is faster

• erosion breaks rocks

• erosion moves rocks

What is a change that is made from weathering?

• tree roots break rock into smaller pieces

• ocean waves wash sand off the beach

• rivers carry soil and rocks through valleys

• wind blowing sand off a sand dune

Landslides are an example of what?

• weathering caused by moving water

• weathering caused by plants

• erosion caused by wind

• erosion caused by gravity

How is a delta formed?

• Volcanic eruptions built up

• Large rocks grew from the bottom of the ocean

• The river deposited large amounts of sediment into a pile

• Water evaporated and new land appears

How do rocks get smooth and round at the bottom of a river?

• The river froze during the winter

• Rushing water weathered them

• A glacier picked them up and moved them

• Wind blew sand on them

What most likely caused a dune (pile of sand) to move?

• rushing rivers

• blowing winds

• freezing water

• weathering rock

During a hurricane, beaches are changed by erosion. Which statement best explains what happens?

• Freezing and thawing temperatures break rocks

• Gravity pulls apart larger boulders

• Sand is carried away by strong waves and wind

• Plants' roots grow through and move sediments

Which one is NOT physical WEATHERING?

• Movement of rock by wind

• Breaking down of rock by wind

• Breaking down of rock by plants

• Breaking down of rock by moving water

How is a U-Shaped valley made?

• eruption of a volcano

• movement of a glacier

• earthquake

• ocean waves

How is a sea arch created?

• the wind broke it down

• ocean waves crashed into it

• a tree grew into the rock and broke it

• ice moved a large chunk of it