Changing Coastlines

Waves are created by wind.

• True

• False

I transport material along a beach. What am I?

• Longshore drift

• Longnose drift

• Longshape drift

• Longway drift

I happen when the waves don't have enough energy to carry sediment.

• Erosion

• Swash

• Deposition

• Backwash

Define the term "coastal landform".

• A coastal object

• An erosional process that forms objects along our coast

• A landform located in the forest

• A natural feature of the earth's surface located along our coast

Define the term "erosion".

• The destruction of a coastline

• The collapse of rocks and dirt

• The gradual wearing away of land by water and air

• The build up of minerals and sand

Define the term "deposition".

• The building up of land through deposits of sand and other materials

• The destruction of sand and other materials

• The dumping of sand and minerals on a coastline

• The destruction of coastlines

The process of water being pushed up onto the shore of a beach as the result of incoming waves is called _____.

• swash

• backwash

• rip current

• longshore drift

When water flows away from the beach shore and back towards the ocean this is called _____.

• swash

• backwash

• storm surge

• longshore drift

The movement of material along a coast by waves that approach at an angle to the shore but recede directly away from it.

• swash

• longshore drift

• storm surge

• breakwater

Why are sea walls built along our coast?

• so our ships have a safe passage along our coastline

• to provide a safe swimming area for people visiting the coastline

• to reduce erosion

• to reduce deposition