Formation of Landforms

Question 1

spits

Answer 1

long narrow strips of land caused by LSD extending the beach into the sea. sediment projection creates a salt marsh due to the sheltered and saline environment where the speed of water is slower so finer sediment is deposited as the water doesn’t have the energy to carry it anymore.

Question 2

what can changes in current and wind affect in spits

Answer 2

the changing current affects the length of the spit as less sediment is deposited. changes in wind direction can result in lots of recurved ends, making it a compound spit

Question 3

barrier beaches

Answer 3

when a beach or spit extends across a bay to join two headlands, creating a brackish lagoon which mixes freshwater from rivers and saltwater from the sea and forms due to changes in sea levels when glaciers melt

Question 4

tombolos

Answer 4

a bar or beach that connects offshore islands to the mainland. they’re formed due to wave refraction as they absorb the waves velocity so they don’t reach the mainland but leads to the deposition of sediment when it refracts

Question 5

offshore bars

Answer 5

they’re an area out to sea with lots of sand as it’s deposited here when the waves don’t have enough energy to carry it to the shore, this normally happens when waves break early. they can form during backwash and help to absorb wave energy

Question 6

emergent landform examples

Answer 6

raised beaches, stumps and stacks

Question 7

submergent landform examples

Answer 7

rias, fjords and dalmation coastlines