Depostional Features

Question 1

Where are beaches formed

Answer 1

They are formed in the area between high and low tide

Question 2

Describe beach material

Answer 2

Very well sorted

Question 3

Characteristics of a sandy beach

Answer 3

Gently sloping, small particle size, less friction

Question 4

characteristics of a shingle beach

Answer 4

Steep beach embankment, large particle size, weak backwash, percolation, more friction

Question 5

What is needed for spits to form (4 things)

Answer 5

Contact supply of sand or other material, long shore drift operates most of the time, the coastline has a sudden change in direction to leave a sheltered Bay Area, the sea is quite shallow

Question 6

A spit forms in the flowing way (in order)

Answer 6

1.The direction of the coastline changes 2. Sand is in continuous supply and is moved along the shore by long shore drift 3. As there is a natural break in the coastline large material is deposited in the water sheltered by the headland 4. Long shore drift continues and further deposition of finer material allows the feature to build up slowly to sea level and extend in length 5. Sometimes the wind changes direction, this may cause the end of the spit to curve inland causing a hooked shape, the spit can only extend so far though as a river estuary’s current will stop the further material building up and carry it out to sea

Question 7

How do stacks form

Answer 7

Processes e.g. abrasion > small crack > cave > cave goes through to the other side > headland