Water Quality Test
Aquatic Science
1. Ice floats on water because:
A
B
C
D
of cohesion
ice has a higher density than water
water shrinks when it freezes and is less dense
water expands when it freezes and is less dense
2. A solution is a(an):
A
B
C
D
breaking of a chemical bond
chemical reaction
a mixture of two substances that appears uniform in appearance
a mixture of two substances that appears nonuniform in appearance
3. The bonds between the oxygen and hydrogen atoms that
make up water molecules are called:
A
B
C
D
covalent
metallic
ionic and covalent bonds
covalent and hydrogen bonds
4. The ability of water to move up a straw against the pull of gravity is due to:
A
B
C
D
its neutral pH
capillary action
tensile strength
covalent bonds
5. Water (H​2​O) is an example of:
A
B
C
D
an alloy
a molecule
a salt
a mixture
1
Water Quality Test
Aquatic Science
6. The property that allows insects to ​specifically​ walk on water is:
A
B
C
D
Cohesion
Capillary action
Specific heat
Surface tension
7. In its solid form water is ____________ dense than its liquid form.
A more
B less
8. Dechlorinator is used to remove the following chemical from tap water?
A
B
C
D
sodium
chlorine
ammonia
hydrochloric acid
9. Sugar and salt when added to water would be considered:
A.
B.
C.
D.
solvents
solutes
suspensions
hypertonic
10. A solution of soapy water has a slippery feel, turns red litmus paper blue, and has a pH of 8.5. The soapy
water is best described as a(n)
A
B
C
D
neutral solution
acidic solution
corrosive solution
basic solution
11. Warm water holds ______________ oxygen than cold water?
A
B
more
less
2
Water Quality Test
Aquatic Science
12. Which of the following are bacteria helpful to your aquarium?
A
B
C
D
Nitosomonas, streptococcus
Nitrosomonas, staphalococcus
Nitrosomonas, Nitrobacter
Archeobacteria, eubacteria
13. What are the main components in hard water?
A
B
C
D
Chlorine, Calcium
Nitrogen, Calcium
Calcium, Magnesium
Phosphorous, Magnesium
14. This substance is sour and turns blue litmus paper pink.
A
B
Acid
Base
15. Nitrate and phosphate are usable compounds for aquatic plants?
A
B
True
False
16. When salt is dissolved in water, water is the:
A
B
C
D
reactant
solution
solute
solvent
17. A local pond has experienced a large fish kill due to an unknown acid. At what pH would this most
occur?
A.
8
B. 6.5
C. 7
D. 3
3
Water Quality Test
Aquatic Science
18. The graph shows the growth of a Daphnia population in a 420 Liter aquarium. According to these data,
what was the approximate Daphnia population by the end of the second day?
A.
B.
C.
D.
40
60
80
100
19. A scale based upon the amount of hydrogen protons in a substance and ranges from 0-14:
a.
b.
c.
d.
Nektonic scale
BOD cycle
DO scale
pH scale
20. Which of the following is an Abiotic factor?
A. Fish in a pond
C. Bacteria in the water
B. Aquatic Plants in a pond.
D. pH of water in a pond
21. Power plants that discharge warm water into rivers have a negative effect on aquatic life. This is because the
higher the water temperature:
e. Increases the pressure of the river water
f.
Increases the pH value of the river water
g. Decreases sediment solubility in the river water
4
Water Quality Test
Aquatic Science
h. Decreases the dissolved oxygen in the river water
22. Which of the examples below would illustrate condensation as a process seen in the water cycle?
a. dew on grass in early morning
b. snow on a mountain top
c. rain running off a parking lot
d. water leaving a plant leaf
23. Which type of bonding is used in explaining cohesion of water molecules?
a. covalent bonding
b. ionic bonding
c. hydrogen bonding
d. electrostatic bonding
24. An example of NPS (non-point source) pollution would be:
A. Pig’s blood from a slaughterhouse
B. Fertilizer from John Smith’s lawn
C. A heavy metal contaminant from manufacturing plant that produces car parts
D. Oil leaked from a drill rig site
25. A woman filled a glass bottle with water, sealed the top, and then placed it in the freezer to cool quickly.
She became distracted and forgot all about the bottle. She opened the freezer the next day and observed
that the bottle had broken into several pieces. What is the most valid conclusion about what happened to
the bottle?
A. The glass bottle shrunk as it froze
B. The glass bottle expanded as it froze
C. The water in the bottle expanded as it froze
D. Something in the freezer fell on the bottle and broke it
5
Water Quality Test
Aquatic Science
26. Any form of water that falls from the clouds (rain, sleet, snow, and hail)
A. precipitation
B evaporation
C. condensation
D. transpiration
27. There are two liquids in a container, one is cold and the other is warm water, where would the warm water be
found relative to the beaker
A. The A liquid is cold and found on top of B
B. The B liquid is cold and found on top of A
C. The B liquid is warm and found on top of A
D. The A liquid is warm and found on top of B
28. Which type of sediment has the largest porosity (pore spaces between)?
A. sand
B. clay
C. gravel
D. top soil
29. The unique properties of water enable life to exist on Earth. Which of these is a property of ​pure water​?
A. Its solid form is denser than its liquid
B It has a low heat absorption capacity
C It is slightly more acidic than air
D It dissolves many substances
30. What is the formula for nitrate?
A. NO​2
B. NH​3
C. NO
D. NO​3
6
Water Quality Test
Aquatic Science
31. A cloud in a bottle demonstrates the process of:
A. Condensation
B. Precipitation
C. Evaporation
D. Groundwater
32. ​Joggers running along an urban running path noticed paint running out of a culvert into a nearby creek. Local
authorities investigated and found that some homeowners had painted the outside of their home and dumped the
extra paint down a storm drain. They were fined. What type of water pollution did they cause?
A. Toxic
B. Sediment
C. Nutrient
D. Bacterial
33. A farmer applies excess fertilizer to one of her fields just before a rainstorm. What kind of pollution is this
most likely to lead to?
A. Toxic
B. Sediment
C. Nutrient
D. Bacterial
34. ​ A new wastewater treatment plant opens in an area where raw sewage used to be dumped directly into a bay.
Which two types of pollution will be reduced the most by the new plant?
A. Toxic and sediment
​B. Sediment and bacterial
​ C. Toxic and nutrient
​D. Bacterial and nutrient
7
Water Quality Test
Aquatic Science
35. When an area is clear cut for development all the trees and vegetation are removed:
This type of activity will most likely lead to what type of water pollution if not enough barriers are installed
A.
B.
C.
D.
Toxic
Sediment
Nutrient
Thermal
36. When a coal burning power plant uses water to produce steam for its processes in production of electricity
often the water is returned to a local water body at a warmer temperature. This will result in what type of pollution
A.
B.
C.
D.
Toxic
Sediment
Nutrient
Thermal
8
Water Quality Test
Aquatic Science
MATCHING
37. Ammonia
A. NO​3
38. Weathering
B. Water sticking to celery
39. Adhesion
C. Immediate death to fish
40. Acute Toxicity
D. Water sticking to water
41. Chronic toxicity
E. Prolonged exposure to fish
42. Cohesion
AB. breaking down of rocks
43. Solute
AC. NH​3
44. Biotic factor
AD. NO​2
45.Solvent
AE. Sugar in lemonade drink
46. Abiotic factor
CD. Temperature of water in a
pond
BD. Water
BE. Fish in a pond
9
Water Quality Test
Aquatic Science
Short Answer Questions​—please ​pick ​4​ of the questions ​to answer in detailed
complete sentences.
​DO ON A SEPARATE SHEET OF NOTEBOOK PAPER
​ ​1. ​Draw a pH scale and label acid, base and neutral, what can be used to indicate an acid or
base and how does this affect fish? Give some examples of acids and bases in your daily life.
2. Explain the detailed steps and illustrate nitrification (nitrogen cycle) that must occur in an
aquarium in order for it to be sustained?
3. How does an algae bloom affect the dissolved oxygen of a pond? (Describe 3 ways)
4. How much freshwater is available for living organisms including humans to use? Compare this to
the amount of saltwater on Earth and to the total amount of all water on Earth. Explain why water is
a natural resource that must be conserved.
5. Assess how human activities affect the quality of water. Using a specific example, show how a
technological solution (such as farm irrigation, paved roads and parking lots, sewer systems, use of
fertilizers and herbicides, etc.) to a problem can have both benefits and drawbacks (such as risks
or unintended consequences) to water bodies(Lakes, ponds, rivers) in Texas.
6. Create a thinking map to describe four special properties of water and to justify why these are
essential to life on Earth.
7. Justify the following statement: The availability of water for humans and other living organisms is
dependent upon the water cycle. Give at least 2 supporting detailed reasons
8. Why should we be concerned about pharmaceuticals in our drinking water?
9. How does runoff directly and indirectly affect our local watershed? What does the runoff
contain? What is the name of our local watershed?
10. Why is important to have aquarium and zoos? What is the overall benefit to having these
facilities available to the public?
10
Water Quality Test
Aquatic Science
11