Geography Physical Edexcel A Level Comprehensive Exam And Actual Answers 2024

Beach - Answer sediment is deposited mainly by constructive waves, and the breaking action of these may from beach cusps and berms. long shore drift also adds material from erosional sources. destructive waves shape them by creating storm ridges at the back shore during high tide. backwash scours sediment away from the beach. offshore bar - Answer a long ridge of sand or pebbles formed formed a short distance out to sea, in shallow water where destructive waves break before reaching the beach. currents in the sea also supply sediment. barrier beach - Answer This is a beach that connects two areas of land, with a lagoon forming behind. they form with a plentiful supply of sand or shingle, shallow nearshore and offshore areas, waves with enough energy and rising sea level to push the sediment towards the shore. nearshore bar - Answer similar to a barrier beach but smaller, they commonly form in the surf zone where storm waves break, scooping up sediment. they can be sinuous and attached to the shore in some places. Tombolo - Answer forms after long shore drift carries sediment across a gap between the mainland and an island, forming a narrow ridge of sand and pebbles. spit - Answer prevailing wind leads to long shore drift and then when is meets a change in the coastline like river mouth. The sediment is deposited as the second current causes the energy to be lost. A secondary wind can lead to a curve and a salt marsh may form behind it. double spit - Answer when two spits from each direction of a large bay form however they don't meet because the river current is too strong.