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homework7 copy

homework7 copy - c What is the primary role that ocean...

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SIO 10 -Winter 2010 Homework # 7 Due Friday, March 5 Lectures 20, 21, 22 20 points Write your answers on a separate sheet of paper with your name and student ID on it. Short, concise answers are preferred above lengthy ones. Note that your handwriting must be legible to receive credit. Be sure to answer all sub-questions. 1. a) What are the four ways that running water causes erosion (2pts)? b) Name the three components of a sediment load carried by a stream (1pt). c) What is the difference between stream competence and stream capacity (2pts)? d) What happens to the competence and sediment load of a river when it reaches the ocean (1pt)? 2. Use the diagram of a stream below to answer all parts of this question (1pt each). 3. a) Where does the salt in the ocean come from (1pt)? b) Why is the concentration of salt in the ocean greater than in rivers (1pt)? 4. a) What is the main force that causes surface currents in the ocean (1pt)? b) What two components contribute to the tide-generating force (1pt)?
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Unformatted text preview: c) What is the primary role that ocean currents play in the global heat cycle (1pt)? 5. a) What is meant by the term ‘water table’ (1pt)? b) Is groundwater a renewable resource (1pt)? c) You are very careful about not wasting water. Unfortunately, you have a very lousy neighbor who is always pumping water out of his well to wash the car, do the laundry, water the lawn, etc. One day, you notice that the water you pump out of your well is salty. What happened? What is this phenomenon called? Who do you blame for this injustice (2pts)? d) Name two other problems that arise from depletion of groundwater resources (1pt). a) The meander shown is geologically long-lived and will exist for thousands of years. True or false? b) What is the feature at the location labeled A? c) If a cutoff were to form across the neck (from X to Y), what new feature would be created? d) Would you expect to see a lot of rapids and waterfalls along this length of stream? Yes or no?...
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