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Ch. 9 Lesson 4 What is erosion?
erosion <ul><li>movement of materials from 1 place </li></ul><ul><li>destructive process </li></ul>
landslides <ul><li>gravity quickly pulls rocks & dirt downhill </li></ul>
landslide
deposition <ul><li>placing of the materials in a new place </li></ul><ul><li>constructive process </li></ul>
delta <ul><li>place where heavy sediments are deposited when a river meets an ocean </li></ul>Mississippi River
The Mississippi Delta includes much of coastal Louisiana and Mississippi, including the metropolitan area of New Orleans.
delta
rocks are ground into sediment under moving glaciers
Rivers can make deep canyons by erosion. Grand Canyon
<ul><li>waves, sand & gravel break rocks </li></ul><ul><li>form harbors & inlets- erode more quickly than other areas </li...
 
<ul><li>wind blows dust, soil or sand from 1 place to another </li></ul><ul><li>makes sand dunes </li></ul>sand erosion
wind erosion <ul><li>winds blow topsoil from fields </li></ul><ul><li>farmers surround fields with tall trees </li></ul>
 
Erosion game
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5th Grade Ch. 9 Lesson 4 What is Erosion

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Transcript of "5th Grade Ch. 9 Lesson 4 What is Erosion"

  1. 1. Ch. 9 Lesson 4 What is erosion?
  2. 2. erosion <ul><li>movement of materials from 1 place </li></ul><ul><li>destructive process </li></ul>
  3. 3. landslides <ul><li>gravity quickly pulls rocks & dirt downhill </li></ul>
  4. 4. landslide
  5. 5. deposition <ul><li>placing of the materials in a new place </li></ul><ul><li>constructive process </li></ul>
  6. 6. delta <ul><li>place where heavy sediments are deposited when a river meets an ocean </li></ul>Mississippi River
  7. 7. The Mississippi Delta includes much of coastal Louisiana and Mississippi, including the metropolitan area of New Orleans.
  8. 8. delta
  9. 9. rocks are ground into sediment under moving glaciers
  10. 10. Rivers can make deep canyons by erosion. Grand Canyon
  11. 11. <ul><li>waves, sand & gravel break rocks </li></ul><ul><li>form harbors & inlets- erode more quickly than other areas </li></ul><ul><li>harbors = areas that are protected from ocean waves </li></ul>wave erosion
  12. 13. <ul><li>wind blows dust, soil or sand from 1 place to another </li></ul><ul><li>makes sand dunes </li></ul>sand erosion
  13. 14. wind erosion <ul><li>winds blow topsoil from fields </li></ul><ul><li>farmers surround fields with tall trees </li></ul>
  14. 16. Erosion game
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