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WorksheetsDensity Of Ocean Water
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
What Is Density?
a)
A Ruler
b)
a measure of the amount of information on a storage medium
c)
A Heart
d)
A Dog
2.
As the temperature of ocean water changes from 10 to 30 degrees C, how does the density change?
a)
The water becomes more dense
b)
The water becomes less dense
c)
The density does not change
d)
It is impossible to predict
3.
The density of ocean water is influenced by what two factors?
a)
Salinity and temperature
b)
Water color and chlorophyll
c)
Dissolved gases and dissolved solids
d)
Dissolved carbon and trace elements
4.
DEEP ocean currents are the result of
a)
Winds
b)
Tides
c)
Changes in the density of ocean water
d)
The Coriolis effect
5.
Which of the following statements describes the formation of DEEP ocean currents?
a)
They are driven by the wind.
b)
They form as warm water moves along the east coast of North America
c)
They occur when cold, dense water sinks and flows beneath warmer water
d)
They form around Hawaii, isolating the area.
6.
Where does DEEP ocean water come from?
a)
All over the ocean
b)
Near the coasts
c)
In a few small places near the equator
d)
In a few small places near the poles
7.
About how long does it take a blob of water to rise from the bottom of the ocean to the surface?
a)
1 day
b)
10 years
c)
1000 years
d)
1 million years
8.
The temperature and salinity of the ocean change the most:
a)
Near the surface
b)
Near the bottom
c)
Near Antarctica
d)
Near the equator
9.
What is true about the water on the bottom of the ocean?
a)
It is the saltiest water found in the ocean
b)
It is the densest water found in the ocean
c)
It is not frozen because sunlight warms it up
d)
It does not move
10.
What is a current?
a)
temperature and precipitation typical of an area over a long period of time
b)
most powerful surface current in the North Atlantic Ocean
c)
large stream of water that flows through lakes and/or oceans
d)
large stream of moving water that flows through the oceans
11.
Where would you find the lowest density seawater
a)
surface zone
b)
surface zone
c)
abyssal zone
d)
transition zone
12.
The energy that drives surface ocean currents comes from
a)
wind
b)
wave action
c)
temperature differences
d)
salinity variation
13.
Because of the Coriolis effect, ocean currents in the Northern Hemisphere are deflected
a)
North
b)
South
c)
Clockwise
d)
Counter clockwise
14.
Which force is involved in the development of surface currents?
a)
Gravity
b)
Inertia
c)
Friction
d)
None of the above
15.
Ocean currents that move toward the poles are
a)
Warm in the N Hemisphere cold in the S Hemisphere
b)
Warm
c)
Cold
d)
Cold in the N Hem. warm in the S Hem.
16.
What is true about an ocean current that is moving toward the equator?
a)
It is warm
b)
It is fast
c)
It is cold
d)
It is slow
17.
The Gulf Stream affects the climate of
a)
Great Britain
b)
North Caroliina
c)
South Carolina
d)
All of these
18.
The influence of cold currents is mostly felt in
a)
Middle latitudes in winter
b)
Higher latitudes during spring
c)
Higher latitude in winter
d)
Tropics
19.
What causes surface ocean currents to be deflected?
a)
Deep currents
b)
Global winds
c)
The Coriolis effect
d)
Earth's revolution
20.
The rising of cold water from deeper layers to replace warmer surface water is called__________
a)
The Coriolis effect
b)
A surface current
c)
Reflection
d)
Upwelling
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