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Author Question: The single largest sand mining operation is in Alaska. Indicate whether the statement is true or ... (Read 92 times)

darbym82

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on: Aug 22, 2018
The single largest sand mining operation is in Alaska.
  Indicate whether the statement is true or false

Question 2

How do coasts receive new sand? Describe the concept of a coastal cell.


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reelove4eva

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Reply #1 on: Aug 22, 2018
Answer to Question 1

False

Answer to Question 2

Most new sand on a coast is brought in by rivers. The sand is moved parallel to the beach by longshore drift, and it is moved onshore and offshore at right angles to the beach as the seasons change. If a beach is stable in size, neither growing nor shrinking, the amount of new sand entering must be balanced by the amount of old sand being removed. The natural sector of a coastline in which sand input and sand outflow are balance may be thought of as a coastal cell.


darbym82

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Reply 2 on: Aug 22, 2018
Excellent

lkanara2

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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