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Water Quality 1
Test Description: Water final test
Instructions: Answer all questions to get your test result.
1) To represent the distribution of water on earth, a teacher filled a 2-liter bottle with 2000 mL of water. She then made a mark at the 1944 mL point. What should be written at the 1944 mL level to distinguish the type of water to that point?
A
Ground water
B
Ocean water
C
Water from lake, ponds and Streams
D
Water from glaciers icebergs
2) How are estuaries connected to oceanic organisms?
A
Estuaries provide sunlight for oceanic organisms.
B
Estuaries provide primary food for oceanic organisms.
C
Estuaries provide excess dissolved oxygen for oceanic organisms.
D
Estuaries provide nursery grounds for oceanic organisms
3) How would excessive increases in nitrate and phosphorous concentration affect freshwater systems?
A
It would cause excessive algal blooms.
B
It would cause increased water clarity.
C
It would cause increased dissolved oxygen.
D
It would cause extremely cold water.
4) If your community was planning to build a new sanitary landfill, what would be the most important environmental consideration in locating the landfill?
A
location of the groundwater
B
accessibility to a major highway
C
cost of the land
D
proximity to an industrial park
5) Which best explains how estuaries support plant and animal life?
A
The water provides energy for growth.
B
The cold temperatures decrease dissolved oxygen.
C
The dry land removes pollutants.!
D
The habitat areas provide nutrients and shelter.
6) Which best describes a significant benefit estuaries have on the environment?
A
Pollution is moved from rivers to oceans through estuaries.
B
Coastal wetlands provide safe and ideal conditions to support animal habitats.
C
Fishing industries thrive in and around tropical estuaries.
D
Wildlife helps protect the land from erosion in estuaries.
7) Which best explains why estuaries are an important habitat for many marine organisms in comparison to the open ocean?
A
There are more nutrients available in estuaries.
B
There is more salt available in estuaries.
C
There is less food in estuaries.
D
There are more predators in estuaries.
8) Which statement best describes why most of the water cycle takes place over the oceans.
A
Saltwater evaporates more quickly than freshwater.
B
Most of Earth’s water is located in the oceans.
C
The temperatures over the oceans are warmer than over land.
D
The temperatures over the oceans are colder than over land.
9) Which is the greatest harm or hazard agriculture can have on a river basin?
A
Runoff from fertilizers and pesticides can pollute the river.
B
Farms can harm recreational areas along river banks.
C
Seeds from the farm plants can grow in the river.
D
Topsoil can wash into the river.
10) Which is the best conclusion about life in estuaries?
A
.There is a very diverse group of organisms.
B
There is a limited group of microscopic organisms.
C
There is a diverse group of microscopic organisms.
D
There is a limited group of fish and organisms.
11) Which would be the impact on the environment if there were no estuaries?
A
There would be more pollutants in the oceans.
B
There would be a drought.
C
There would be less boating, fishing and swimming.
D
There would be an increase concentration of salt in the oceans.
12) Which best describes the types of organisms found in estuaries?
A
They cannot tolerate brackish water.
B
They are only found in freshwater.
C
They can survive in salt water.! !
D
They tolerate both freshwater and salt water.
13) What most directly affects the amount of dissolved oxygen in a body of water?
A
pH
B
temperature
C
turbidity
D
salinity
14) The amount of dissolved oxygen found in a lake would be decreased by which human activity?
A
planting trees
B
adding nitrates
C
swimming
D
boating
15) Which best describes the relationship between fish and dissolved oxygen?
A
When dissolved oxygen levels are low, it doesn’t hurt the fish.
B
When dissolved oxygen levels are high, fish die.
C
When dissolved oxygen levels are low, fish thrive.
D
When dissolved oxygen levels are high, fish thrive.
16) What does pH measure?
A
how acidic or basic!
B
nutrient levels
C
dissolved oxygen
D
turbidity
17) Which statement best describes the relationship between agricultural fertilizer runoff and nitrates in a body of water?
A
As runoff decreases nitrates cause algae populations to increase.
B
As runoff increases, nitrate levels decrease.
C
As runoff decreases, nitrate levels cause the temperature to increase.
D
As runoff increases, nitrate levels increase.
18) Which measurement uses clarity to test the quality of a body of water?
A
pH
B
dissolved oxygen
C
bioindicators
D
turbidity
19) Through which practice do scientists gather information about bioindicators in a lake?
A
By catching organisms and making underwater observations.
B
By introducing fertilizers and chemicals into the lake.
C
By using thermometers and pH probes to test the water.
D
By measuring the clarity of the water.
20) Why is freshwater in short supply on Earth?
A
Most of it is in solid form.!
B
Most of it is polluted.
C
Most of it in the atmosphere.!
D
Most of it is trapped underground
*select an answer for all questions
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