Lab 7A-Oceanography.docx - Lab 7A Questions and Answers 1...

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Lab 7A: Questions and Answers 1. The orthogonal drawn ______. By drawing additional orthogonals on the same map panel, they would be oriented “parallel” to the orthogonal you drew.
2. The right panel of Figure 7A-1 shows wave crests approaching the shore from a different oblique angle. Draw the orthogonal on the wav crest in the right example. This orthogonal _______.
3. The longshore current in the left panel flows from ______. Draw arrows in the two panels representing the direction of their respective longshore currents.
4. Hypothesize what would happen to the sediment if the beach ended. What would be the result of the littoral drift?
5. The orthogonals of wave crests approaching a headland refract _______ the headland, and concentrate wave energy.

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