Landscapes created by deposition

Question 1

what are the four landscapes created by deposition

Answer 1

• beach
• bar
• spit
• sand-dune

Question 2

what is a beach

Answer 2

• a large body of sand and small rocks on the coast
• strong swash (constructive waves) throw pebbles and sand far up the beach
• forming a ridge above the high tide mark called a berm

Question 3

how a beach formed

Answer 3

• when material created through erosional processes (like abrasion)
• are thrown onto higher ground and is held there in suspension
• transportation and deposition is how the material accumulates

Question 4

what is a bar

Answer 4

• a spit (sand or shingle)which has extended out to sea

- and attached to the other side of a headland

Question 5

how is a bar formed

Answer 5

• when LSD transports material to the coastline
• constructive waves deposit material at the edge which accumulates to form a spit
• the spit extends out to sea and joins two headlands together
• forming a lagoon behind the bar (circle of water) protected from the sea

Question 6

what is a spit

Answer 6

• an elongated narrow ridge of sand or shingle

- joined to the edge of a headland that projects out to sea or estuary

Question 7

how is a pit formed

Answer 7

• long shore drift deposits material at the corner of the headland
• the movement to the edge consists of approaching the beach at an angle and backwashing at a perpendicular angle
• moving material along the coast

Question 8

what is a sand dune

Answer 8

a tall body of sand

Question 9

how is a sand dune formed

Answer 9

• winds blow sand from the coast into land allowing it to accumulate
• accumulated sand becomes stabilised by regalation as species like marram get established
• dunes change in form the further inland, they get smaller the closer to the sea