Chap3 shaping the land

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Chap3 shaping the land

  1. 1. Shaping the Land Chapter 3
  2. 2. KEY WORDS <ul><li>Define the following words with a partner: </li></ul><ul><li>Weathering </li></ul><ul><li>Erosion </li></ul><ul><li>Water cycle </li></ul><ul><li>Glaciation </li></ul><ul><li>Glaciers </li></ul><ul><li>Zone of accumulation </li></ul><ul><li>Zone of ablation </li></ul><ul><li>deposition </li></ul>
  3. 3. What is the difference in their skin?
  4. 4. The Work of Water pg. 21 <ul><li>Water wear away at rocks and minerals: this is called weathering. </li></ul><ul><li>Weathering breaks the rock in two ways: </li></ul><ul><li>Mechanically </li></ul><ul><li>Chemically </li></ul><ul><li>Look at the difference between the pictures in figure 3.1 </li></ul>
  5. 5. <ul><li>Mechanical weathering: When water fills cracks, freezes, then expands and puts pressure on the rocks. </li></ul><ul><li>Chemical weathering: When water dissolves some of the chemicals found in a rock. </li></ul><ul><li>***EROSION: When water carries away these small weathered pieces of rock. </li></ul><ul><li>Teachers domain: Erosion </li></ul>Click here!
  6. 6. The Water Cycle http://www.dnr.state.wi.us/org/caer/ce/eek/earth/groundwater/watercycle.htm CLICK on cycle below
  7. 7. The Work of Ice pg. 23 <ul><li>Glaciation occurs when snow freezes. </li></ul><ul><li>Glaciers are created when more snow falls in winter than can be melted during the following summer. </li></ul><ul><li>As snow builds up the bottom layer becomes ice. Think of in the winter when you have snow banks on your lawn. </li></ul>Go to Teacher’s Domain: Glaciers
  8. 8. Glaciation A glacier moving rock A glacier cutting through a valley After the glacier has melted, a glacier valley A model of a river bed during glaciation Click on the polar bear
  9. 9. <ul><li>This was Canada covered at one point in history. </li></ul>
  10. 10. British Columbia Ice field http://nsidc.org/glaciers/ Go to Google Earth and find the British Columbia Icefield

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