WorksheetsProperties of Seawater Assessment
Total questions: 18
Worksheet time: 18mins
Name
Class
Date
1.
Major dissolved ions in seawater occur everywhere in seawater in the same proportion. This is called ___________________.
a)
Ocean Acidification
b)
Rule of Constant Proportions
c)
Adhesion
d)
Salinity
2.
___________________ is the amount of salt dissolved in seawater.
a)
Cohesion
b)
Rule of Constant Proportions
c)
Salinity
d)
Ocean Acidification
3.
Water molecules sticking to substances other than water is called ______________________.
a)
Adhesion
b)
Cohesion
c)
Salinity
d)
Density
4.
When water molecules stick to other water molecules, it is called __________________.
a)
Adhesion
b)
Cohesion
c)
Salinity
d)
Solutes
5.
How does transparency benefit photosynthetic organisms?
a)
It decreases the salinity of seawater.
b)
It allows them to see prey and predators.
c)
It allows them to create carbon dioxide.
d)
It allows them to create their own food.
6.
What happens to the pressure of water as you go deeper into the ocean?
a)
Increases
b)
Decreases
c)
Stays the same
d)
Only fluctuates with temperature.
7.
Why does sound travel faster in water than in air?
a)
Water is more dense than air.
b)
Water is less dense than air.
c)
Water is usually a lower temperature than air.
d)
Water is usually a higher temperature than air.
8.
Why is water considered to be a universal solvent?
a)
It can dissolve the most things of any natural substance.
b)
It can be dissolved by almost any substance.
c)
It easily bonds to other elements during chemical reactions.
d)
It can easily change to the three states of matter.
9.
\Salinity is measured in parts per ____________________.
a)
thousand
b)
hundred
c)
ten
d)
ten thousand
10.
As the temperature of seawater decreases (decreases, increases), it’s density increases (decreases, increases).
a)
decreases, increases
b)
increases, increases
c)
decreases, decreases
d)
increases, decreases
11.
The speed of _____________________ can change in seawater due to temperature, salinity and pressure.
a)
Gasses
b)
Light
c)
Sound
d)
Salinity
12.
The color of light that is absorbed least by the ocean is _____________________________.
a)
Blue
b)
Indigo
c)
Violet
d)
Red
13.
Which is denser? Cool seawater or warm seawater?
a)
Cooler
b)
Warmer
14.
Which two solutes make up the largest percentage of dissolved salts in seawater?
a)
Sodium, Sulfate
b)
Chloride, Magnesium
c)
Sodium, Chloride
d)
Sulfate, Magnesium
15.
Which of the following could remove pure water from seawater?
a)
Evaporation
b)
Melting of polar ice caps.
c)
Increasing salinity.
d)
Increasing the temperature of seawater.
16.
The three most abundant gases dissolved in seawater are
a)
Hydrogen, Sodium Chloride and Carbon
b)
Carbon, Chloride and Oxygen
c)
Carbon dioxide, Nitrogen and Magnesium
d)
Nitrogen, Carbon Dioxide and Oxygen.
17.
True or false: The temperature of the ocean does not fluctuate as much as the air does.
a)
True
b)
False
18.
According the rule of constant proportions, chloride will usually account for about 55% of the salt that is present.
a)
True
b)
False
100 %
