Surface Currents 124-127
Name that Current 127
Deep Currents 127-129
Situations (bellwork)
Effects of Currents 130-133
100
What is a horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean's surface?
Surface Currents
100
What current warms western Europe?
the Gulf Stream
100
What are deep currents?
stream-like movements of ocean water located far below the surface
100
What will happen in diagram 1 if the partition is removed?
Hot water will go up; cold water will go down.
100
What are these animals?
Manatees
200
Name the 3 factors that control surface currents.
global winds, the Coriolis effect, and continental deflectons
200
What current warms Japan?
the Kuroshio current
200
What is the single determinate for deep currents
Deep currents are determined by density.
200
What are two controls of the experiment in figure 1?
type and quality of the water; size, thickness, volume of the container, etc.
200
What part of the Earth does El Nino effect?
along the coast of S. America
300
describe the Coriolis effect
the apparent curving of the path of a moving object from an otherwise straight path due to the Earth's rotation
300
What current circles the Antarctic?
the Antarctic Circumpolar
300
What two factors determine density of deep currents?
Salinity and temperature determine the density of ocean water.
300
What do convection currents have to do with surface currents?
Convection currents in the air make wind. Wind drives surface currents.
300
What winds sometimes move less warm water to the western Pacific than they usually do? 132, 163
El Nino
400
Why does Earth's surface not have surface currents in a very uniform pattern?
continental deflection
400
Why does L.A. have a cooler climate than Phoenix, which is at about the same latitude?
The California current cools the west coast of the U.S. [Also, there is a sea breeze that cools the land in the daytime.]
400
What kind of water will have the most density? [Address both density and temperature.]
Cold, salty water has the most density.
400
Kelp are giant seaweeds that grow in clear, shallow coastal waters. They grow long leafy blades that provide a habitat for eels, sponges, sea stars, and sea otters. What ocean process supports the Kelp forest? 131
upwelling
400
!!!DAILY DOUBLE!!! Give me a question that relates to figure 3 and ocean currents.
How does upwelling affect manatees?
500
What is the periodic change in the eastern Pacific Ocean in which surface-water temperatures becomes unusually cool? 132
La Nina
500
What effect does the Benguela current have on land?
It cools southern Africa
500
Which Deep current is deepest [128]?
the Antarctic Bottom Water
500
How does the technology of NOAA buoys along the equator help scientists respond to changes in the ocean? [What information do these buoys communicate?]
The buoys measure surface temperature, air temperatrue, currents and wind to warn people of changes
500
[Figure 2] A long shore current moves down a sandy coastline, north to south. Developers build a concrete breakwater at one point along the coast. What happens to the sandy beach south of the breakwater?
The beach will be built up north of the breakwater; it will be eroded south of the breakwater.
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