Coastal Processes and Sediment Transport

The video tutorial explains the concept of transportation in geography, focusing on the movement of sediment by water. It introduces the four types of transportation: traction, saltation, solution, and suspension. The main focus is on longshore drift, a process where sediment moves along the shoreline due to wave action. The tutorial details how prevailing winds influence this process, causing waves to push sediment up the beach (swash) and gravity to pull it back down (backwash). This creates a zig-zag pattern of sediment movement. Key terms like prevailing wind, swash, and backwash are explained, providing a comprehensive understanding of coastal sediment dynamics.

What is the primary focus of transportation in geography?

• Movement of sediment by water

• Movement of people across regions

• Transportation of goods by road

• Air travel and its impact on climate

Which of the following is NOT a type of sediment transportation?

• Suspension

• Evaporation

• Saltation

• Traction

What is longshore drift?

• The movement of sediment along the shoreline by waves

• The movement of air currents over the ocean

• The deposition of sand dunes inland

• The erosion of cliffs by wind

What is the swash in coastal processes?

• The movement of sediment back down the beach

• The waves pushing material up the beach

• The erosion of the beach by wind

• The deposition of sediment in the sea

How does gravity affect the backwash?

• It drags sediment back down the beach

• It pushes sediment up the beach

• It has no effect on sediment movement

• It causes sediment to float

What pattern does sediment follow due to swash and backwash?

• Circular

• Straight line

• Zig-zag

• Random

What role does the prevailing wind play in longshore drift?

• It has no effect on sediment movement

• It determines the direction of wave approach

• It erodes the beach

• It causes sediment to settle

What is the primary cause of longshore drift?

• Tidal changes

• Marine life movement

• Wave action and prevailing winds

• Human activity

Which term describes the most common wind direction?

• Longshore drift

• Prevailing wind

• Swash

• Backwash

What is the result of longshore drift on a beach?

• Movement of sediment along the beach

• Erosion of sand dunes

• Formation of cliffs

• Increase in marine biodiversity