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Deposition. Hydrology NOTES page 11. ©Mark Place, 2009-2010 www.LearnEarthScience.com. big objects take the least amount of time to settle. denser particles settle first. Rate of Settling. Particle Shape. Rate of Deposition. Slope. Rate of Deposition. Stream Velocity.
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Deposition Hydrology NOTES page 11 ©Mark Place, 2009-2010 www.LearnEarthScience.com
big objects take the least amount of time to settle
Rate of Settling Particle Shape
Rate of Deposition Slope
Rate of Deposition Stream Velocity
Rate of Deposition Stream Discharge
Where is deposition greatest? Inside of Curve Mouth of River
Why? lowest velocity
What agent of deposition? glacier
Deposition by Streams: Graded Bedding slow fast slow fast
What happens to particle size? decreases, because the velocity decreases
delta What is this?
large small
What agent? wind
Glacial Deposits till unsorted
Glacial Deposits erratics
Glacial Deposits striations
Regents Review 3 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
X X X
Which graph best represents the relationship between the discharge of a stream and the velocity of stream flow? 1 3. 1. 2. 4.
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 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
2 Which agent of erosion most likely produced this valley’s shape? 1. wave action 2. moving ice 3. blowing wind 4. flowing water
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
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? 4 3. 1. 4. 2.
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