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Deposition learn earth science


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Deposition learn earth science

  1. 1. Deposition Hydrology NOTES page 11 ©Mark Place, 2009-2010
  2. 2. big objects take the least amount of time to settle
  3. 3. denser particles settle first
  4. 4. Rate of Settling Particle Shape
  5. 5. Rate of Deposition Slope
  6. 6. Rate of Deposition Stream Velocity
  7. 7. Rate of Deposition Stream Discharge
  8. 8. Deposition in Rivers
  9. 9. Where is deposition greatest? Inside of Curve Mouth of River
  10. 10. Why? lowest velocity
  11. 11. What agent of deposition? glacier
  12. 12. Deposition by Streams: Graded Bedding fast slow fast slow
  13. 14. What happens to particle size? Why?
  14. 15. What happens to particle size? decreases, because the velocity decreases
  15. 16. What is this? delta
  16. 17. large small
  17. 18. What agent? wind
  18. 19. What direction?
  19. 20. Glacial Deposits till unsorted
  20. 21. Glacial Deposits erratics
  21. 22. Glacial Deposits striations
  22. 23. Glacial Features
  23. 24. Regents Review This sand dune was most likely formed by 1. water flowing from the left 2. water flowing from the right 3. wind blowing from the left 4. wind blowing from the right 3
  24. 25. X X X C B A Deposition Equilibrium Erosion
  25. 26. Which graph best represents the relationship between the discharge of a stream and the velocity of stream flow? 1. 2. 3. 4. 1
  26. 27. As the velocity of a stream transporting pebbles, sand, silt, and clay decreases from 30 cm/s to 0.1 cm/sec, some sediment deposition will occur. Which choice below best describes the sediments that will be deposited as a result of the decrease in stream velocity? 1. pebbles, sand and some silt 2. clay and some silt 3. pebble, sand, silt, and most of the clay 4. only some sand and clay 1
  27. 28. Which agent of erosion most likely produced this valley’s shape? 1. wave action 2. moving ice 3. blowing wind 4. flowing water 2
  28. 29. Transported sediments are usually deposited at locations in which 1. the freeing and thawing of water occurs 2. the chemical breakdown of rocks occurs 3. a decrease in the speed of the agent of erosion occurs 4. an increase in the physical weathering of rocks occurs 3
  29. 30. In a soil sample, the particles have the same shape but different sizes.  Which graph below best represents the relationship between particle size and settling time when these particles are deposited in a quiet body of water? 1. 2. 3. 4. 4
  30. 31. Which statement best describes sediments deposited by glaciers and rivers? 1. Glacial deposits and river deposits are both sorted. 2. Glacial deposits are sorted, and river deposits are unsorted. 3. Glacial deposits are unsorted, and river deposits are sorted. 4. Glacial deposits and river deposits are both unsorted. 3