New Topic 1. Erosion 2. Transportation 3. Deposition 13th January 2021 Coastal Processes Coastal Processes - Erosion Learning Objective: -to be able to describe 2 processes of erosion Erosion https://www.bbc.co.uk/iplaye r/episode/p083cd51/on-theground-coastal-erosion-the- what to protect? homes-lost-to-the-sea Sketch the 4 ways in which the sea erodes the land. https://www.youtube.com/watch?v= TYQ--nTcNU8 – helpful hint video Key Term: Erosion – the wearing away of the land Match up the images with 4 ways in which the sea erodes the land. 1. Hydraulic action – the force of the waves crash against the cliffs. Air is trapped in holes in the cliff and compressed resulting in the cliff cracking. 2. Corrasion/Abrasion – stones and pebbles are thrown against the cliff. 3. Solution/Corrosion – sea water slowly dissolves the cliff. 4. Attrition – stones and pebbles smash into each other breaking into smaller pieces. Key Term: Erosion – the wearing away of the land Write down four ways in which the sea erodes the land next to your sketch. 1. Hydraulic action – the force of the waves crash against the cliffs. Air is trapped in holes in the cliff and compressed resulting in the cliff cracking. 2. Corrasion/Abrasion – stones and pebbles are thrown against the cliff. 3. Solution/Corrosion – sea water slowly dissolves the cliff. 4. Attrition – stones and pebbles smash into each other breaking into smaller pieces. What landforms are created by coastal erosion? Headlands and Bays Headlands are formed when the sea attacks a section of coast with alternating bands of hard and soft rock. The bands of soft rock, such as sand and clay, erode more quickly than those of more resistant rock, such as chalk. This leaves a section of land jutting out into the sea called a headland. The areas where the soft rock has eroded away, next to the headland, are called bays. How is this landform created? What will happen to it in the future? It will collapse 3. Abrasion 2. 1. Attrition This type of erosion is called Hydraulic Action How to see it: https://www.youtube.com/watch? v=bxyVG9rSrjE - on utube Follow celebrated landscape photographer and conservationist Craig Potton, as he explores New Zealand's extraordinarily rich and varied coastline. It takes viewers from spectacular places known the world over to isolated and unknown wilderness spots, to uncover some of New Zealand's most breathtaking shores. Task: Make notes to answer these questions: 1. Describe the biodiversity found along New Zealand coastline e.g. the different plants and animals? 2. How does a coastline impact on humans quality of life? 3. How will humans mange the coastline with the impact of climate change and rising sea levels in the future? 4. Research about the coastal features on BBC bitesize. Go on this link, revise and test yourself: https://www.bbc.co.uk/bites ize/guides/zmwxsbk/revisio n/1 Coasts 5/4/3 9/8/7/6 Describe 2 processes of erosion Describe 4 processes of erosion Describe 2 processes of transportation Describe 4 processes of transportation Give some facts about a real example of an erosional landform Give a range of facts about a real example of an erosional landform Describe simple ways that erosion can be managed Describe in detail how erosion can be managed. Give some facts about a real example of a depositional landform. Give a range of facts about a real example of a depositional landform.
