Rocky Coasts And Coastal Plains

Question 1

What forms a rocky coast

Answer 1

Result from a geology resistant to erosive forces of sea, rain and wind. Lithology and structure means they erode slowly.
High energy environment where erosion exceeds deposition.

Question 2

What forms a coastal plain landscape

Answer 2

Low energy environments where deposition exceeds erosion, therefore experience a net accumulation of sediment. Form through coastal accretion which comes from offshore sources (waves, tides or current) or terrestrial sources (rivers, glaciers, wind, mass movement)

Question 3

Types of coastal plains

Answer 3

Sandy coasts (composed of sand, shingles and cobbles) and estuarine coasts (composed of mud, clays and silts)

Question 4

Types of weathering

Answer 4

Mechanical, biological or chemical

Question 5

What is erosion

Answer 5

The breakdown of rock and it’s immediate transport by the eroding agent

Question 6

Types of ways coasts can be attacked

Answer 6

Marine processes (waves and wind erosion) and terrestrial processes (mass movement, weathering, wind erosion, river erosion)

Question 7

What is mass movement

Answer 7

Downward slope of material due to the force of gravity

Question 8

What happens when erosion and deposition are equal

Answer 8

Dynamic equilibrium occurs as there’s a continuous flow of energy through the coast but the size of the stores remain unchanged

Question 9

How can coastal accretion form coastal plains

Answer 9

Continuous net deposition causes coastline to extend seawards