WorksheetsOceans Saltwater
Total questions: 24
Worksheet time: 2hrs 41mins
Name
Class
Date
1.
Which process does NOT lead to a decrease in the salinity of water?
a)
runoff from land
b)
precipitation
c)
sea ice melting
d)
evaporation
2.
Which term refers to a rapid change of temperature with increasing depth of the ocean?
a)
pycnocline
b)
thermocline
c)
abyssalocline
d)
isothermal cline
3.
In addition to salinity, what factor affects the density of seawater?
a)
depth
b)
latitude
c)
temperature
d)
salt content
4.
What happens to pressure as you go deeper into the ocean?
a)
increases
b)
decreases
c)
stays the same
d)
doubles
5.
The salt that is in your salt shaker is the same salt that is in our oceans?
a)
true
b)
false
6.
Which of the following is not a process that decreases the salinity of seawater?
a)
runoff from land
b)
icebergs melting
c)
precipitation
d)
evaporation
7.
What is the most abundant salt in the sea?
a)
calcium chloride
b)
potassium chloride
c)
magnesium chloride
d)
sodium chloride
8.
The highest salinity would be found in which of the following areas?
a)
an area with high rates of precipitation
b)
an area with high rates of evaporation
c)
an area with plenty of runoff
d)
all of the above
9.
In addition to salinity, what factor affects the density of seawater?
a)
depth
b)
latitude
c)
temperature
d)
salt content
10.
Which process increases the salinity of water?
a)
runoff from land
b)
formation of sea ice
c)
precipitation
d)
melting of sea ice
11.
Which of the following can cause an increase in the density of ocean water?
a)
a decrease in temperature
b)
an increase in salinity
c)
a decrease in ocean circulation
d)
two of these
12.
The high salinity of the Mediterranean Sea is due primarily to —
a)
Precipitation
b)
Deposition
c)
Volcanoes
d)
Evaporation
13.
Seawater is typically denser than freshwater due to seawater’s —
a)
Greater depth
b)
Lower freezing point
c)
Smaller mass
d)
Higher salinity
14.
Why is the ice shelf floating?
a)
The ocean water is
filled with vegetation
that keeps
the ice from sinking.
filled with vegetation
that keeps
the ice from sinking.
b)
The ice is melting faster than it can sink
c)
The ice is warmer than the ocean water
d)
The ice is less dense than the ocean water.
15.
The main cause of the salinity of the ocean is
a)
Runoff from land
b)
Metamorphism
c)
Underwater volcanism
d)
CO2 emissions
16.
What term is the measure of dissolved salts in water?
a)
Thermocline
b)
Salinity
c)
Saltiness
d)
Tides
17.
What is the most abundant solid dissolved in seawater?
a)
Magnesium Chloride
b)
Calcium Chloride
c)
Potassium Chloride
d)
Sodium Chloride
18.
The higher the salt content in the ocean the ________ dense the water will be.
a)
less
b)
more
c)
nothing happens
19.
If I have freshwater that is less dense, what will it do in comparison to salt water that is more dense?
a)
The more dense water will float and the less dense water will sink.
b)
The more dense water will sink and the less dense water will float
c)
Nothing they will mix evenly.
20.
The highest salinity would be found in which of the following areas?
a)
an area with high rates of precipitation
b)
an area with high rates of evaporation
c)
an area with plenty of runoff
d)
all of the above
21.
Which of the following is not a process that decreases the salinity of seawater?
a)
runoff from land
b)
icebergs melting
c)
precipitation
d)
evaporation
22.
In addition to salinity, what factor affects the density of seawater?
a)
depth
b)
latitude
c)
temperature
d)
salt content
23.
What is density?
a)
mass-per-unit volume
b)
mass-per-unit area
c)
weight-per-unit mass
d)
weight-per-unit volume
24.
Where would you find the lowest density seawater?
a)
surface zone
b)
deep zone
c)
transition zone
d)
abyssal zone
100 %
