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Lesson 5: Weathering and erosion

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Lesson 5: Weathering and erosion

  1. 3. How physical processes shape the coastline <ul><li>Learning objectives (LO) </li></ul><ul><li>Describe and explain the difference between constructive and destructive waves. </li></ul><ul><li>Explain how weathering and erosion affect the coastline. </li></ul>
  2. 4. Coasts <ul><li>The coastline is in a state of constant change . It is affected by waves, tides and also the weather . </li></ul><ul><li>Along coasts the processes of erosion , transportation and deposition are always taking place. These processes create many different types of landforms. </li></ul>
  3. 5. Waves <ul><li>Waves </li></ul>
  4. 6. Types of Waves <ul><li>What are the differences between these waves? </li></ul>
  5. 7. Constructive and destructive waves <ul><li>Add the key terms on page 14(brown box) to your key word list </li></ul><ul><li>Use annotated diagrams to explain: </li></ul><ul><li>a) constructive waves </li></ul><ul><li>b) destructive waves </li></ul>
  6. 8. Erosion , Transportation and Deposition <ul><li>Erosion : The wearing away of the coastline by the power of the sea </li></ul><ul><li>Transportation : </li></ul><ul><li>The movement of eroded material by the power of the sea </li></ul><ul><li>Deposition : </li></ul><ul><li>When the sea deposits(drops) the eroded material it is carrying(when the sea loses energy) </li></ul><ul><li>Weathering: The wearing away of the coastline by the action of the weather, plants or chemicals </li></ul>
  7. 9. Erosion and processes
  8. 10. Weathering and erosion <ul><li>There are 3 types of erosion: abrasion, attrition and hydraulic action (see key word list) </li></ul><ul><li>Add these to your key word list using p15 </li></ul><ul><li>There are 2 types of weathering: Corrosion and Wetting/drying (see key word list) </li></ul><ul><li>2. Add these to your key word list </li></ul>
  9. 11. What affects the rate of erosion? <ul><li>Rock type: </li></ul><ul><li>Shape of the coastline: </li></ul><ul><li>Distance waves have travelled </li></ul><ul><li>Explain the effects of each of these. </li></ul>
  10. 12. How physical processes shape the coastline <ul><li>Learning objectives (LO) </li></ul><ul><li>Describe and explain the difference between constructive and destructive waves. </li></ul><ul><li>Explain how weathering and erosion affect the coastline. </li></ul>

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