Mrs. Hinrichs
Grade 8 Science
Ocean Currents
Read “Facts about Ocean Currents” and use “World Map: Ocean Currents” to answer the following
questions.
1. List the factors that affect the movement of ocean currents. (6)
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a. Which of these factors mostly affect the surface movement of currents? (1)
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b. Which factors affect the lower layer of the ocean (causing convection currents)? (1)
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2. How does the Coriolis Effect affect the direction of wind and ocean currents? (2)
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3. Why is density important in understanding the movement of ocean currents? (1)
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4. What factors affect the density of ocean water? (2)
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5. Draw a diagram of “coastal upwelling.” Label the movement of cold and warm water. (2)
Mrs. Hinrichs
Grade 8 Science
6. Draw a diagram of Antarctic bottom water. Label the movement of cold and warm water. (2)
7. Why is ocean upwelling important for humans and our economy? (2)
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8. Why is the movement of Antarctic bottom water important? (1)
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