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L.O:weathering, erosion, deposition
When rocks are exposed to theenvironment, they can weather (breakdown).
Weathering when rocks breakdown intosediment (rock particles)because they are exposed to theenvironment
Two kinds: physical and chemicalweathering
Physical weathering rocks breakdowninto sediment (small rock particles)caused by ice or biological activity
Chemical weathering: when theminerals in rocks dissolve or rustfrom oxygen or acid rainChemical weathering happens in warm...
Water is the greatest cause ofweathering.
Small rocks weather faster than bigrocks
Small rocks weather faster than bigrocks
Rocks with soft minerals are lessresistant to weathering
Rocks with harder minerals are moreresistant to weathering
Soil is the result of the weathering ofrocks and biological activity.
Erosion: when sediment (rockparticles) are transported away.Wind, gravity, ice (glaciers) andespecially running water are ...
Streams:Streams (rivers) are moving water.
A stream’s velocity depends on its• Gradient (slope)• Discharge (volume of water it carries)
The meander (outside of the bend) ofa stream has the MOST erosion.
“C” has most erosion
Inside the bend (meander) has mostdeposition (“A”).
Which has more erosion? Which hasmore deposit?
Streams create V-shaped valleys
Streams create V-shaped valleys
Complete page 74.
Glaciers are huge slow-moving“rivers of ice”.Glaciers transport all sizes of rocks asthey move.
Glaciers create U-shaped valleys.
Deposition:When agents of erosion deposit thesediments they carry.
Deposition: When agents of erosiondeposit the sediments they carry.
Streams deposit sediment withhorizontal sorting.• As a stream slows down: theLargest, heaviest, Roundest and densestpartic...
Glaciers deposit unsorted (mixed-uprocks) piles .
Review#7weathering,erosion, deposition
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Review#7weathering,erosion, deposition

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Transcript of "Review#7weathering,erosion, deposition"

  1. 1. L.O:weathering, erosion, deposition
  2. 2. When rocks are exposed to theenvironment, they can weather (breakdown).
  3. 3. Weathering when rocks breakdown intosediment (rock particles)because they are exposed to theenvironment
  4. 4. Two kinds: physical and chemicalweathering
  5. 5. Physical weathering rocks breakdowninto sediment (small rock particles)caused by ice or biological activity
  6. 6. Chemical weathering: when theminerals in rocks dissolve or rustfrom oxygen or acid rainChemical weathering happens in warm (hot) andhumid (wet) environments.
  7. 7. Water is the greatest cause ofweathering.
  8. 8. Small rocks weather faster than bigrocks
  9. 9. Small rocks weather faster than bigrocks
  10. 10. Rocks with soft minerals are lessresistant to weathering
  11. 11. Rocks with harder minerals are moreresistant to weathering
  12. 12. Soil is the result of the weathering ofrocks and biological activity.
  13. 13. Erosion: when sediment (rockparticles) are transported away.Wind, gravity, ice (glaciers) andespecially running water are agentsof erosion
  14. 14. Streams:Streams (rivers) are moving water.
  15. 15. A stream’s velocity depends on its• Gradient (slope)• Discharge (volume of water it carries)
  16. 16. The meander (outside of the bend) ofa stream has the MOST erosion.
  17. 17. “C” has most erosion
  18. 18. Inside the bend (meander) has mostdeposition (“A”).
  19. 19. Which has more erosion? Which hasmore deposit?
  20. 20. Streams create V-shaped valleys
  21. 21. Streams create V-shaped valleys
  22. 22. Complete page 74.
  23. 23. Glaciers are huge slow-moving“rivers of ice”.Glaciers transport all sizes of rocks asthey move.
  24. 24. Glaciers create U-shaped valleys.
  25. 25. Deposition:When agents of erosion deposit thesediments they carry.
  26. 26. Deposition: When agents of erosiondeposit the sediments they carry.
  27. 27. Streams deposit sediment withhorizontal sorting.• As a stream slows down: theLargest, heaviest, Roundest and densestparticles are deposited first.
  28. 28. Glaciers deposit unsorted (mixed-uprocks) piles .
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