2011 year 8 geography - rainforests - geographic processes

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2011 year 8 geography - rainforests - geographic processes

  1. 1. Rainforests Geographic ProcessYear 8 Geography- Topic 1 – Global Environments - 2011
  2. 2. Geographic Process in the RainforestsWhat is an ecosystem?A natural system made up ofliving organisms and theirenvironment.
  3. 3. Geographic Process in the RainforestsIn a rainforest, there is a complexrelationship between climate,landforms, soils, trees, plants andanimalsA change in one, impactsthe entire system
  4. 4. Geographic Process in the Rainforests Natural EnvironmentAtmosphere Hydrosphere Lithosphere Biosphere (Air) (Water) (Land) (Living Things)
  5. 5. Geographic Process in the RainforestsPaste into your workbooks and discuss as a class
  6. 6. Geographic Process in the RainforestsThe balance ofthe rainforestcan be easilyupset andaffected by theintervention ofpeople
  7. 7. Atmospheric & Hydrologic Processes in the RainforestsWhy do you thinkcountries along theequator experience hotand wet conditions allyear?
  8. 8. Atmospheric & Hydrologic Processes in the RainforestsWhat type of climatedo rainforests growbest in?
  9. 9. Atmospheric & Hydrologic Processes in the RainforestsWhat type of climate dorainforests grow best in?-Warm to hot temperature-Regular heavy rainfall
  10. 10. Atmospheric & Hydrologic Processes in the RainforestsPaste into your workbooks and discuss as a class
  11. 11. Atmospheric & Hydrologic Processes in the RainforestsSoon, after the downpourthe hot sun reappears,creating a steamy, stickyfeeling in the air.Humid conditions resultbecause their is a highpercentage of watervapour in the atmosphere
  12. 12. Why are Rainforests Here?Plants need light, heat and moisture in order to grow.These elements must be in abundance to create the rightconditions for growth. The area between the two tropiclines receives the greatest intensity of light and heat fromthe sun (also called insolation). This heat drives what wecall the hydrological cycle which in turn causes highrainfall + =
  13. 13. Atmospheric ProcessesRainforests help maintain the balance of gases in theatmosphere. During daylight hours, trees and other plants carryout the process of photosynthesis by taking in carbon dioxideand releasing oxygen needed by all living things In Out Carbon Oxygen Dioxide
  14. 14. Lithosphere & Biotic Processes in the RainforestsNutrient RecyclingThe rainforest is warm and moist,therefore organic matter decaysrapidly.When trees die in the rainforest,living organisms quickly absorb thenutrients before they have a chanceto be washed away.This is called nutrient recycling
  15. 15. Lithosphere & Biotic Processes in the RainforestsRainforest SoilsDo you think rainforest soilwould be really rich and fertile orpoor and infertile?
  16. 16. Lithosphere & Biotic Processes in the RainforestsRainforest SoilsQ:Do you think rainforest soilwould be really rich and fertile orpoor and infertile?A: Poor and infertile
  17. 17. Lithosphere & Biotic Processes in the RainforestsRainforest SoilsBecause it rains so much in arainforest the nutrients in the topsoilget dissolved really quickly. Thenutrients get washed down into thelower layers of the subsoil. This iscalled leaching

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