Coastal Processes

Question 1

Define Marine Process

Answer 1

The wearing away of the coastal landscape by the sea

Question 2

What is a type of marine process?

Answer 2

Erosion (including hydraulic action, abrasion, attrition, cavitation, wave quarrying, solution)

Question 3

Define Sub-Aerial Process

Answer 3

The gradual breakdown of the coastal landscape

Question 4

Types of Sub-Aerial Process

Answer 4

• Weathering

* Mass Movement

Question 5

Define Mass Movement

Answer 5

The downhill movement of rock and soil

Question 6

Factors affecting the rate of Marine Erosion

Answer 6

• The longer the fetch, the larger the waves and the more erosion
• The harder the rock (Geology) the slower the erosion rate
• The deeper the sea close to the coast, the smaller the waves and so the less erosion
• The larger the beach the less erosion there will be on the cliff face

Question 7

Define Transportation

Answer 7

The carrying of eroded materials by the sea

Question 8

Types of Transporation

Answer 8

• Traction
• Saltation
• Suspension

Longshore drift transports eroded material in a zig zag pattern by traction, saltation and suspension

Question 9

Define Deposition

Answer 9

A type of Marine process

The dropping down of eroded materials along the coast to form beaches, sand dunes, spits, tombolos, bars and salt marshes. These are all landforms of deposition.

Question 10

Examples of Landforms of Deposition

Answer 10

Examples of these landforms of deposition are as follows:
A Sand Dune system
A Spit
A Tombolo
A Bar
A Salt Marsh

Question 11

What are the types of mass movement?

Answer 11

Rock Falls
Rock Slides
Rotational Slumps
Mud Flows
Soil Creep