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What is a Longshore Current?

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Questions and Answers

What is the primary factor that affects the direction and strength of longshore currents?

Contact with other ocean currents

Shape of the coastline

Wind (correct)

Velocity of waves

What is the result of a wave breaking at an acute angle on another wave or the beach?

The creation of rip currents

A decrease in the velocity of the longshore current

No change in the velocity of the longshore current

An increase in the velocity of the longshore current (correct)

What is the primary function of longshore transport?

To move sand and sediment parallel to the coastline (correct)

To erode the coastline

To create rip currents

To move sand and sediment perpendicular to the coastline

What is the relationship between longshore drift and longshore transport?

Longshore drift is a factor that enables longshore transport to take place Signup and view all the answers

What is the result of a strong longshore current on swimmers?

It makes it difficult for swimmers to return to shore Signup and view all the answers

What is the term for the water carried onshore by waves?

Swash Signup and view all the answers

What is the direction of swash as it arrives onshore?

At an angle to the shoreline Signup and view all the answers

What is the result of the combination of swash and backwash on the beach?

A continuous deposit of sand in a zigzag pattern Signup and view all the answers

What is the primary force responsible for the movement of backwash into the ocean?

Gravity Signup and view all the answers

What is the relationship between beach drift and longshore current?

Beach drift and longshore current work together to create longshore transport Signup and view all the answers

What is the primary direction of movement of a longshore current?

Parallel to the shoreline Signup and view all the answers

What is another term used to describe a longshore current?

Littoral current Signup and view all the answers

What happens when waves from further out to sea meet the longshore current?

They form a rip current Signup and view all the answers

What factor does NOT influence the longshore current?

Distance from the equator Signup and view all the answers

What is the result of a strong longshore current meeting a rip current?

A dangerous situation for swimmers Signup and view all the answers