ChestertonCC - Geo - Changing Coasts - Erosion and Weathering 7-

Erosion happens when water ______ rock into smaller pieces and moves it away.

• Breaks

• Shrinks

• Grows

• Hits

Erosion happens when water breaks rock into ______ pieces and moves it away.

• Bigger

• Smaller

Erosion happens when ______ breaks rock into smaller pieces and moves it away.

• People

• Water

• Gravity

• The wind

Erosion does not involve rocks moving away.

• True

• False

Rocks smash against each other, getting smaller and smoother.

• Attrition

• Abrasion

• Hydraulic action

Rocks smash against the cliff, breaking the cliff up.

• Attrition

• Abrasion

• Hydraulic action

Water pushes into the cracks in the cliff, breaking the cliff up

• Attrition

• Abrasion

• Hydraulic action

______ happens when rocks are broken but stay in the same place.

• Weathering

• Erosion

Chemical weathering

• Rocks are broken down by chemicals in the rain

• Rock is broken down by animals and plants

Biological weathering

• Rocks are broken down by chemicals in the rain

• Rock is broken down by animals and plants