Introduction to coasts

What is a coast?

• A section of land that borders the sea or ocean

• A raised area where sea waves break

• A sea highland with salt marshes

• An area enclosed by the sea

What is a swash?

• Sound produced by the water.

• Water at the coast

• Water washed up the beach when wave break.

• Water washed down the beach when wave break

What is a backwash?

• Its the strong current brought up the beach by a wave

• The downward movement of water at the coast

• Water that runs back down the beach after a wave breaks

• None of the above

Deposition can occur at the coast due to the following reasons EXCEPT one.

• When sea loses energy to to reduced wind strength.

• When waves enter shallow waters

• When waves reach a sheltered area eg a bay

• When it rains heavily and river flows to the sea

Waves can do all the following except one. Which one?

• Erode the coast

• Transport materials up the coast

• Deposit materials at the coast.

• Cause earthquakes

What is a longshore drift?

• Constant and zigzag movement of sand and shingles up the beach by prevailing wind

• Movement of water to the coast at 90 degrees

• Its long process of movement of sand to the coast

• Deposition of sand and other materials at the beach

Name the feature.

• Bay

• Spit

• Cliff

• Lagoon

Name the coastal depositional

• Tombolo

• Lagoon

• Bay

• Sandy beach

What is this feature?

• A spit

• A longshore drift

• A Bay

• A bar

The following is a depositional feature found at the coast. Name it.

• Hills

• Coastal mountains

• Coastal vegetations

• Coastal dunes