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The Coastal Zone Lesson Three

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The Coastal Zone Lesson Three

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  • Connect: What has happened?

  • Lesson Focus: How do coastal processes shape the coastline?What: Learn how coastal landforms are created through erosional processesHow: Analyse photographs to annotate key features and processesWhy: Understand how coasts change over long periods of time

  • This is a wave-cut platform. But how did it get there?

  • Wave-cut platform:

    Erosion causes a notch to be cut into the cliffThis leads to an overhangEventually the overhang collapses, causing the cliff line to retreat The base of the cliff is left behindWrite the labels onto your own copy of this diagram and stick it in your book. Then add at least 2 sentences explaining it.

  • Erosion of the headlandhttp://www.bbc.co.uk/schools/riversandcoasts/coasts/change_coast/pg_11_flash.shtml

  • What erosional features can you see in this photo?Old Harry Rocks, Dorset

  • Does all this happen straight away?

    Discuss with the person next to you.

  • Old Harry RocksStackNew cave formingCollapsedUndercutting means stack will collapse

  • Task: Complete the worksheet by adding in the correct key terms, then stick this sheet into your book.

  • Caves, Arches, Stacks and StumpsThe waves erode FAULTS (cracks) in the headland.The waves eventually erode through the headland to form an ARCH.The arch becomes unsupported and collapses to form a STACK.A STUMP is formed from the collapsed stack.CDBACDBACheck your answers!

  • Annotate the main features on the series of photographs.Extension: Add labels to your photographs which show the types of erosion taking place.

  • Create a story boardYou must include the following key words

    erosion headlandstumparchcavefault stackbay

    Draw at least 6 pictures with captions explaining features of coastal erosion

    Give your storyboard a title and add some colour

  • An example Storyboard

    A Storyboard explaining the features of Coastal Erosion.

    Some rocks are weak and erode easily, whilst some are stronger and are less affected by erosion.Weaker rock can be eroded away to create a bay in between two headlandsThe strong rock headlands will have weak points too, and a fault line may form in one of the cracks.The fault can be eroded to make a cave.

    Next the cave can erode to make an arch.If the arch collapses, a stack will be left standing.The stack may topple over and leave a stump.Eventually, the stump will erode away and nothing will be left

  • Peer AssessmentSwap your storyboard with someone elseHave they included the 8 key words?Have they done detailed captions?Have they drawn clear pictures and coloured them?

    Give the person one positive comment and one thing to work on for next timeWrite these on the back of their sheet

  • Homework: label this as homework in your bookComplete the following GCSE style exam question:

    For a physical landscape that you have studied:State the landform you will discuss. (1 mark)Draw a simple labelled sketch to show the landforms. (1 mark for drawing, 2 marks for correct labels) Using specific detail, explain how this landform was formed.(4 marks- best answers will explain types of erosion and transportation processes)(TOTAL: 8 marks)

  • Reflect: Traffic LightsUse the traffic light system to reflect on something you have learnt today that: you feel confident about youre growing confident towards something you would still like to know

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