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# Deposition

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### Deposition

1. 1. C. DEPOSITION The _____________ of particles and fragments. It is also called ___________________
2. 2. The agents of deposition are:   ____________________   ____________________   ____________________
3. 3. RATES OF DEPOSITION DEPEND ON: 1. Particle size: ________ particles (clay,silt) settle more slowly than larger particles.
4. 4. ________ do not settle out of solution unless the solution becomes _______________ _____________& __________ are the ions that come out of solution.
5. 5. 2. Particle shape: ____________ between water and the surface of particles _______ settling. As the surface area ___________ the time it takes to settle __________
6. 6. 3. Particle Density: ____________ particles settle faster.
7. 7. What is the relationship between settling rate and particle size? Complete the graphs: label each axis Settling rate Particle size
8. 8. What is the relationship between settling rate and shape? Settling rate Particle gets flatter
9. 9. What is the relationship between settling rate and density? Settling rate density
10. 10. Settling Rate and Settling Time: As the rate of settling settling The settling time rate Complete the graph: this relationship is Settling time indirect
11. 11. VELOCITY OF TRANSPORTING MEDIUM: The slower the velocity of the water the ________ particles will settle. It takes longer for particles to settle in ___________ water.
12. 12. SORTING OF SEDIMENTS: Horizontal Sorting: a gradual change in the size,shape and density (of deposited particles) when a stream slows down
13. 13. Horizontal Sorting boulders cobbles Roundest pebbles and sand densest Precipitation …………… silt ……………. Ions in ……………. (colloids) clay ……………. solution Smallest flattest least dense
14. 14. Mississippi River Delta
15. 15. Nile River Delta
16. 16. Vertical Sorting &
17. 17. Graded Bedding: Each layer represents a single event of deposition Largest at bottom smallest at top
18. 18. EROSIONAL -DEPOSITIONAL SYSTEM: ___________ or ___________ are examples of this kind of system.
19. 19. Within a stream system energy transforms from ____________ to ____________ energy.
20. 20. Erosion _____________ _Will dominate in the steeper section and
21. 21. Deposition ______________ In places of less gradient or slope.
22. 22. Kinetic Energy depends on Slope- __________________ velocity increases Kinetic energy increases more erosion occurs
23. 23. Potential Energy depends height on__________ not Slope energy is stored and deposition occurs
24. 24. When the rate of erosion equals rate of deposition: Dynamic Equilibrium ___________________ is reached
25. 25. Erosion occurs more often on land _______ And Deposition occurs in large bodies of water _______
26. 26. Side View lake A B C D Ocean Top View A B C lake D Ocean
27. 27. Streams that flow over flat valleys may develop meandering paths because of erosion and deposition.
28. 28. Glaciers
29. 29. Sediments left by glaciers are: _______________
30. 30. Glacial erratics are large rocks that have been transported by glacial ice without being broken into pieces
31. 31. Some Glacial Features include: U-shaped valleys Moraines unsorted sediments drumlins kettle lakes Drumlins finger lakes outwash plains Kettle lakes erratics outwash plain
32. 32. WIND:
33. 33. Sediments left by wind are ________________
34. 34. Sand dunes may form with a gentle slope facing into the wind ________________ Windward side And a steep slope on the opposite leeward side side___________
35. 35. When wind direction changes sand dunes cross each other creating a feature known as Cross bedding ________________ Most sand dunes are well sorted ___________ layers in sloping ____________
36. 36. Deposition on Coastlines by Ocean Waves and Currents:
37. 37. The sand grains are rounded _____________ & frosted ______________
38. 38. Wind _______ Generates Waves
39. 39. Waves move sand parallel __________ to the shore
40. 40. Barrier beaches may form like Jones Beach or Fire Island
41. 41. Wave action rounds sediments as a result abrasion of __________