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6th - 2.3 - Ocean Currents Flashcards | StudBud
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6th - 2.3 - Ocean Currents
6th - 2.3 - Ocean Currents
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Review of Ocean currents 2.3
Flashcards
35 cards
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Practice quiz
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Questions
35
Answers
1
Gyres form small or large loops and move at differenct speeds depending on the land masses they contact.
True
False
2
What cause density currents?
Differences in temperature and salinity
The moon's gravity
Differences in temperature
Differences in salinity
3
What type of vertical circulation current brings deep, cold water to the ocean surface?
Density Current
Surface Current
Cold Water Current
Upwellings
4
What are the three major wind belts?
polar easterlies, prevailing westerlies, doldrums
polar easterlies, prevailing westerlies, trade winds
horse latitudes, polar easterlies, prevailing westerlies
horse latitudes, polar easterlies, trade winds
5
What would happen without ocean currents?
none of the above
Weather would be "wacky"
We would experience extreme temperatures
There would be no change in weather patterns
6
Prevailing winds occur ___.
only near the Equator
above the oceans
during different seasons
in regular and predictable patterns
7
The great ocean conveyor belt
howe salt is distributed in the the ocean
explains how ocean currents circulate thermal energy around Earth
helped Marlin find Nemo
is used to power car plants
8
The influence of Earth's rotation on the direction of wind is called what?
Global Winds
Coriolis Effect
Local Winds
Monsoon
9
What is a gyre?
A swirling vortex.
A water thing.
A group of circulating ocean currents.
A hole in the ground that shoots up water.
10
Define upwelling
vertical movement of water towards the ocean's surface
warm water brought to the surface
areas of changing pressure on the ocean surface
changes in surface currents
11
One cause of an ocean current is ______________ between wind and the ocean surface.
distance
Friction
energy
height
12
Surface Currents
driven by precipitation levels
driven by changes in salinity
driven by changes in temperature
driven by wind along the ocean surface
13
Winds drive surface ocean currents
true
water vapor
only trenches
false
14
The higher the salinity the _____ the density.
Higher
Lower
Smaller
Biggest
15
The movement of wind and water to the right or left that is caused by Earth's rotation.
surface current
Coriolis effect
upwelling
tide
16
The oceans are major parts of the water cycle
True
False
17
surface ocean currents
are driven by wind
all of the above
influence climate
curve due to the Coriolis Effect
18
What is wind?
local wind patterns
a band of high winds near the top of the troposphere
movement of air from high pressure to low pressure
cold winds that blow from east to west
19
The direction of movement in a gyre is different in each hemisphere
False
True
20
What cause density currents?
Differences in salinity
Differences in temperature and salinity
The moon's gravity
Differences in temperature
21
What happens when cold, salty water sinks?
Surface currents move faster
Gyres move in different directions
Larger waves are formed
Density currents are produced
22
What form of heat transfer is responsible for global winds and ocean currents?
convection
radiation
conduction
absorption
23
What is wind?
cold winds that blow from east to west
movement of air from high pressure to low pressure
a band of high winds near the top of the troposphere
local wind patterns
24
Define ocean currents
movement of the ocean water
a large volume of water flowing in a certain direction
verical difference between the water movement
still ocean water in the deep sea
25
The word SALINITY refers to...
the purity of the earth's crust
the white sands of a beach
the saltiness of a freshwater lake
the saltiness of a body of water
26
What happens to the density of ocean water when the salinity increases?
density increases and water rises
density increases and water sinks
density decreases and water rises
density decreases and water sinks
27
Scientists use a model called Great Ocean Conveyer Belt to describe how currents carry energy through Earth's ocean
False
True
28
A large volume of water flowing in a certain direction is called a(n) _____.
body of water
ocean current
wave
Coriolis effect
29
Which does NOT affect the direction of currents
wind
water depth
coriolis effect
topography
30
Where do ocean currents become the most dense?
near continents
near the equator
in warm, temperate regions
in polar regions
31
Ocean currents do not affect weather and climate
True
False
32
The shapes of continents and other land masses affect the direction and speed of currents.
True
False
33
Surface currents move water_______________________ and does not reach a depth of 400m
vertically
horizontally
below
above
34
Benefits of upwelling
replenishes nutrients
increases ocean movement
removes waste
moves warm water
35
Water that is dense ___________. Deeper water ____________, bringing nutrients and gas with it.
sinks, sinks
rises, sinks
upwells, sinks
sinks, upwells
