Physical Systems Revision Hobart High 2008


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Physical Systems Revision Hobart High 2008

  1. 1. Physical Systems Revision
  2. 2. Need to know <ul><li>Physical Landscape – Swanage Bay Area </li></ul><ul><li>Weather and Climate </li></ul><ul><li>Physical Environments and Systems </li></ul>
  3. 3. Weathering <ul><li>Physical </li></ul><ul><ul><li>Freeze Thaw </li></ul></ul><ul><ul><ul><li> </li></ul></ul></ul><ul><ul><li>Exfoliation </li></ul></ul><ul><ul><ul><li>Occurs in hot, dry climates. </li></ul></ul></ul><ul><ul><ul><li>The outer layer of the rock is heated by the sun during the day, causing it to expand, during the night, as the temperature drops, the rock contracts . This constant expanding and contracting eventually leads to the outer layers of the rock pealing away, leaving behind them rounded rocks and dome shaped outcrops . </li></ul></ul></ul>
  4. 4. Weathering <ul><li>Chemical </li></ul><ul><ul><li>Carbonation – acid rain washing away </li></ul></ul><ul><li>Biological </li></ul><ul><ul><li>Roots and Critters </li></ul></ul>
  5. 5. How does the sea shape the landscape? - EROSION <ul><li>Coastal Erosion </li></ul><ul><ul><li>Hydraulic action </li></ul></ul><ul><ul><li>Corrasion </li></ul></ul><ul><ul><li>Attrition </li></ul></ul><ul><ul><li>Corrosion </li></ul></ul><ul><li>Waves </li></ul><ul><ul><li>Energy released by waves causes the erosion </li></ul></ul><ul><ul><li>Size of waves depends on fetch </li></ul></ul>
  6. 6. TRANSPORTATION <ul><li>Define Swash </li></ul><ul><li>Backwash </li></ul><ul><li>Longshore Drift </li></ul><ul><ul><li>Draw a quick annotated diagram to explain each of these </li></ul></ul>
  7. 7. DEPOSITION <ul><li>Dumping of eroded material after transportation </li></ul><ul><li>Examples are beaches </li></ul>
  8. 8. YOUR landform, Swanage Bay Area, Dorset, UK <ul><li>Features in this area that you will need to be able to describe and explain are: </li></ul><ul><ul><li>Cliffs and wave cut platforms </li></ul></ul>
  9. 9. Wave cut platform
  10. 10. Headlands & Bays
  11. 11. Caves, Arches, Stacks & Stumps
  12. 12. <ul><li>Use this website as a good source of info </li></ul><ul><li>These were all erosional features what about transportation & deposition </li></ul>
  13. 13. Transportation <ul><li>Need to explain how LSD can create beaches and spits </li></ul><ul><li>No spits in swanage but there are beaches with groynes to prevent LSD </li></ul><ul><li>Spit example could be Blakeney Point </li></ul>
  14. 14. The Hydrological Cycle <ul><li> </li></ul><ul><li> </li></ul><ul><li>Know the keywords and definitions </li></ul><ul><ul><li>Page 13 revision guide </li></ul></ul>
  15. 15. Drainage Basins
  16. 16. Hydrographs
  17. 17. Weather & Climate <ul><li>Microclimates </li></ul><ul><ul><li>How do the following affect local weather </li></ul></ul><ul><ul><ul><li>Altitude </li></ul></ul></ul><ul><ul><ul><li>Shelter </li></ul></ul></ul><ul><ul><ul><li>Aspect </li></ul></ul></ul><ul><ul><ul><li>Vegetation </li></ul></ul></ul><ul><ul><ul><li>Water </li></ul></ul></ul><ul><ul><ul><li>Urban Areas </li></ul></ul></ul>
  18. 18. Britain’s Weather <ul><li>Regional variations </li></ul><ul><li>Different parts of the UK experience slightly different regional climates. These can be summarised as: </li></ul><ul><ul><li>Northwest - cool summers, mild winters, heavy rain all year </li></ul></ul><ul><ul><li>Northeast - cool summers, cool winters, steady rain all year </li></ul></ul><ul><ul><li>Southeast - warm summers, mild winters, light rain all year, especially summer </li></ul></ul><ul><ul><li>Southwest - warm summers, mild winters, heavy rain all year, especially winter </li></ul></ul>
  19. 19. Why? Air Masses etc <ul><li>Latitude </li></ul><ul><ul><li>Colder further North </li></ul></ul><ul><ul><li>Warmer in the South </li></ul></ul><ul><li>Ocean Currents </li></ul><ul><ul><li>North Atlantic Drift </li></ul></ul><ul><ul><li>Warm water affects West in Winter </li></ul></ul><ul><li>Relief </li></ul><ul><ul><li>More mountains in west means more rain </li></ul></ul><ul><li>Prevailing winds </li></ul><ul><ul><li>See diagram </li></ul></ul>
  20. 20. Global Climate Patterns <ul><li>See Workbook </li></ul><ul><li>Use page 19 revision guide </li></ul><ul><li> </li></ul>
  21. 21. Types of Rainfall <ul><li> </li></ul><ul><li>Convectional </li></ul><ul><li>Relief </li></ul><ul><li>Frontal </li></ul>
  22. 22. Depressions <ul><li>Low Pressure </li></ul><ul><li>Affect the UK </li></ul><ul><li>Warm & Cold Fronts moving across from west to East </li></ul>
  23. 23. Depression
  24. 24. Great Storm 1987 <ul><li>UK weather event </li></ul><ul><li>Causes and Effects </li></ul>
  25. 25. Climate Change <ul><li>Go over potential Causes </li></ul><ul><ul><li>What is the overall cause? </li></ul></ul><ul><ul><ul><li>How does this relate to global warming? </li></ul></ul></ul><ul><ul><li>What are the underlying reasons for this cause? </li></ul></ul><ul><li>What are some of the predicted effects </li></ul><ul><ul><li>Global Warming </li></ul></ul><ul><ul><li>Others? </li></ul></ul><ul><li>What can be done about it </li></ul><ul><ul><li>Discuss </li></ul></ul>
  26. 26. Ecosystem – The Rainforest (Amazon) <ul><li>Rainforest </li></ul><ul><ul><li>Global Distribution of Tropical Rainforests </li></ul></ul><ul><ul><li>Climate & Weather </li></ul></ul><ul><ul><li>How does climate & weather affect the vegetation & soil </li></ul></ul><ul><ul><li>How does vegetation affect soil & soil affect vegetation </li></ul></ul><ul><ul><li>Humans impact on Rainforest </li></ul></ul>