Term
| 1. (3 points) List three mechanisms by which rivers transport sediment (mechanisms, not sand, mud, wood etc.) |
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Definition
a. solution
b. suspension
c. bedload |
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Term
| 2. (3 points) Identify the coastal tectonic setting that has the fewest large river deltas. |
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Definition
| Convergent boundary zones, or collisional |
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Term
| 3. (8 points) Where does estuarine sediment ultimately come from? |
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Definition
a) bluff s c) rivers
b) offshore d) biological sources |
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Term
| 4. (3 points) List three processes by which the ocean erodes bedrock? |
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Definition
a. hydraulic riving
b. abrasion—the use of tools
c. dissolution |
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Term
| 5. (9 points) List three general options a homeowner on a rapidly eroding bluff has to save his or her house. |
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Definition
a. retreat
b. armor
c. accomodate |
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Term
| 6. (3 points) Identify the geological term used to describe the rapid downslope movement of large masses of material. |
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Definition
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Term
| 7. (3 points) Three factors that influence the shape of a river delta are |
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Definition
a. River input
b. waves
c. tides |
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Term
8. (6 points)
a) Name an estuary in a drowned river valley (Ria)
b) Name an estuary formed by tectonic processes. |
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Definition
a. Chespeake Bay, Deleware River valley
b. San Fransisco Bay |
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Term
| 9. (3 points) Differential erosion refers to: |
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Definition
| The fact that different rocks erode at different rates. |
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Term
| 10. (2 points) The Ovens are what kind of landform on the Maine coast? |
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Definition
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Term
| 11. (3) The upper delta begins where _____________ begin to branch from the main stem of the river? |
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Definition
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Term
| 12. (3) Identify three mechanisms by which deltas grow vertically (upbuild): |
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Definition
a. flooding
b. meandering
c. peat formation |
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