L.O: To know and explain how features of deposition are formed. How is the coastline shaped by the processes of deposition and transportation? How did this land form? L.O: To know and explain how features of deposition are formed.

Starter – Recap from last lesson Match the image with the most appropriate label. A B C D 1 3 2 4 1. The waves erode FAULTS (cracks) in the headland. 2. The waves eventually erode through the headland to form an ARCH. 3. The arch becomes unsupported and collapses to form a STACK. 4. A STUMP is formed from the collapsed stack.

Name the Feature 2 1 4 3

Quiz What is the process called when chemicals (such as salt) break down the structure of rocks? What is attrition? How does the process of hydraulic action erode cliffs?

This is a cave (‘Stair Hole’). 1 2 This is a cave (‘Stair Hole’). This is an arch (‘Durdle Door’). 3 4 This is a stack (Old Harry’s Rocks). These are stumps.

Landforms of Deposition These are features that are formed where sand, shingle and mud accumulate faster than they can be moved by the waves (i.e. the waves lose energy required to transport it) Beaches Spit Bar Tombolo Sand dunes

Beaches Beaches are the most common depositional landform and they are caused by the deposited sediment between storm and low tides

How are spits formed?

How are spits formed?

SPITS These pictures are in the wrong order. Which order should they go in?

Now copy these down and write a sentence for each to explain what is happening 2 1 5 3 4

Real Life Spits Barmouth Spit Sandbanks Sand Spit

Bars, Tombolos and Cuspate Forelands Slapton Sands A coastal bar and Lagoon Chesil Beach A tombolo

Try to Describe what each feature looks like What could have caused each feature to form?

What are these features?

Sand Dunes These form when the wind blows the dry sand from beaches inland and it builds up in ridges running parallel to the beach. They get bigger over time and may even be colonised by salt loving plants (e.g. marram grass).

Plenary – True or False Longshore Drift is the wearing away of rocks by waves A spit is a feature formed by deposition Most prevailing winds in the UK come from the South West

Extension - Key Words Long Shore Drift – The movement of sediment along the coast by wave action Prevailing wind – The most frequently occurring wind direction in a location. Spit – an embankment of deposited sand or shingle that is attached to the land at one end Deposition – when sediments are put down or dropped by the sea at it loses energy Transportation – the movement of sediment Bar – an area of deposited sediment that stretches across a bay leaving a lagoon behind it Tombolo – an area of deposited sediment that stretches from the mainland to join up with an island