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Ocean Currents Flashcards | StudBud
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Ocean Currents
Ocean Currents
20 terms
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Deep & surface ocean currents.
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
The driving force influencing global climate is
density differences.
uneven heating of the earth's surface.
the Coriolis effect.
moisture in the atmosphere.
2
What causes surface ocean currents to curve?
Earth is round.
Earth turns (rotates) on its axis.
The tilt of Earth’s axis.
The gravitational pull of the moon on Earth.
3
Large streams of moving water under the surface of the ocean are called
Upwellings
Waves
Tides
Currents
4
Which of the following causes movement of deep ocean currents?
Denser water sinking.
Uneven heating of the surface of the earth.
Air pressure differences on the earth.
Deep currents form when cold water rises & warm water sinks.
5
______currents reshape shores by transporting sand along the coastline.
global
longshore
rip
tidal
6
The circulating movement of air and water on the earth is due to the heat transfer called:
convection
air pressure
radiation
conduction
7
How does the density of warm water compare to cold water?
Cold water has a greater density than warm water.
Temperature does not affect density.
Warm water has a greater density than cold water.
8
The ocean transfers_______ energy around the world.
Mechanical
Thermal
Kinetic
Sound
9
ElNino events disrupt...
all of these
fish populations
upwellings
weather patterns
10
When air is in direct contact with the ocean water heat is transferred by ____________.
Convection
Conduction
Radiation
11
As waves approach the shore they...
intensify in magnitude and wavelength.
all of these
lose their energy and collapse.
are pushed upward and fall forward.
12
Which current is the most likely to affect the climate of Massachusetts?
North Atlantic Drift
North Equatorial Current
Gulf Stream
Labrador Current
13
As the earth spins wind and water on the surface are deflected and begin to spin. This is:
upwelling
the Coriolis effect
El Nino
a gyre
14
What is the major source of energy for ocean currents?
Sun
Volcanoes
Plate tectonics
Heat from inside the Earth
15
When winds push away coastal surface water and deep, cold water moves toward the coast.
All of these happen
Phytoplankton bloom
Nutrients are brought to the surface
an upwelling occurs
16
The _____brings cold water to the Pacific coast of the US
California Current
Gulf Stream
North American
Westerly
17
The higher than normal tide that occurs at new and full moon is called a _____ tide.
Rogue
Spring
slack
Neap
18
How does the density of saltwater compare to freshwater?
Freshwater and saltwater have the same density.
Saltwater has a greater density than freshwater.
Freshwater has a greater density than saltwater.
19
What causes surface ocean currents to move?
Differences in salinity.
Global winds.
Differences in water temperature.
Differences in water density.
20
Global currents rotate in large _____ in opposite directions in the hemispheres.
upwellings
gyres
cells
streams
