Longshore Drift and Beach Processes

The video tutorial explains the process of longshore drift, where beach material is moved along the coast by wave action. It covers the roles of swash and backwash, influenced by prevailing winds and gravity, in transporting materials like pebbles and sand. The tutorial also demonstrates how to create a diagram to illustrate these processes, emphasizing the importance of understanding wave directions and the impact of groins in preventing material loss.

What is the primary process that moves beach material along the coast?

• Erosion

• Longshore drift

• Tidal waves

• Sedimentation

What is the purpose of a groin on a beach?

• To increase sand deposition

• To enhance wave action

• To prevent beach material from moving

• To attract tourists

What is the term for the wave action that moves up the beach?

• Swash

• Backwash

• Current

• Tidal wave

What happens to beach material during the backwash?

• It moves further up the beach

• It is deposited on the beach

• It is pulled back towards the sea

• It remains stationary

How does gravity affect the movement of beach material?

• It pulls material up the beach

• It has no effect

• It pulls material down the slope

• It pushes material sideways

Which direction does the swash move in relation to the prevailing wind?

• Perpendicular to the wind

• In the same direction as the wind

• Randomly

• Opposite to the wind

What is the effect of a strong swash on beach material?

• It moves material up the beach

• It deposits material in the sea

• It has no effect

• It erodes the beach

What is the role of the prevailing wind in longshore drift?

• It causes erosion

• It stops the movement of material

• It has no role

• It determines the direction of swash

What should be included in a diagram illustrating longshore drift?

• Only the wind direction

• Beach, sea, and wind direction

• Only the sea

• Only the beach

What is the final step in creating a diagram of longshore drift?

• Label the sea

• Draw the beach

• Indicate the direction of longshore drift

• Add a compass