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Section 15.3 Ocean Movements
Main Idea
Ocean Currents
Use with page 403.
(continued)
Details
Compare the types of ocean currents by completing the table
below.
Ocean
Current
Density
current
Cause
Characteristics
Location
Move slowly
move fast, follow
predictable
patterns
Model gyres of ocean currents by making a simplified sketch of
Figure 15-23. Consider the effects of the Coriolis effect, land masses,
and temperature on gyres as you draw.
Upwelling
Use with page 405.
Sequence the steps that show how upwelling supports marine
ecosystems.
1. Trade winds move surface water away from the land.
2.
3.
4.
S YNTHESIZE
Imagine Earth was a planet that had two moons. How would this
impact the tides on the planet?
176
Section 15.3 Ocean Movements