WorksheetsWater Quality Study Guide
Total questions: 32
Worksheet time: 20mins
What were the specific water quality test performed on our creeks
Pollution, dilution, and erosion
Dissolved Oxygen, pH, and temperature
Turbidity, pollution, pH
Photosynthesis, cellular respiration and limiting factors
What does Dissolved Oxygen mean?
How much acid is in the water
How cold the water is
DO
How much oxygen is in the water
Factors that affect dissolved oxygen include
temperature and stream flow.
lack of fish and amphibians.
the amount of carbon dioxide.
Non of the above.
pH is the measurement of
how acidic or basic a solution is.
just the acidity of a solution.
how acidic or basic the atmosphere is.
Non of the above.
Why does pure water have a pH of 7?
There is no such thing as pure water.
Because pH scale is 0 to 14.
Because water contains the equal amounts of hydrogen and hydroxide ions.
Pure water does not have a pH of 7.
pH value of less than 7 is considered to be
polluted.
basic.
like drain cleaner.
acidic.
pH greater than 7 is considered to be
neutral.
basic.
acidic.
polluted.
Temperature of the water impacts
what kind of organisms can live in rivers, creeks and lakes.
the amount of dissolved oxygen.
the amount of minerals dissolved in the water.
all of the above
Too far above or below a preferred range of temperature will
decrease the number of individuals in a species.
increase a plant's ability to do photosynthesis.
not matter because we did not measure this.
not act as limiting factor.
Cold water holds more dissolved oxygen than warm water.
True
False
A watershed is
just the Colville river or just the Columbia river.
an area of land that drains all the streams and rainfall to a common outlet such as the outflow of a reservoir, mouth of a bay, or any point along a stream channel.
not usually impacted by humans.
a small building that contains a water pump.
What is salinity?
The property of containing salt
The amount of suspended solids
Describes the condition of the water
Describes how acidic or basic water is
Where are nitrates and phosphates found?
Fertilizer
Manure
Detergent
All of the above
Why are too many nutrients (like nitrates and phosphates) bad for our waters?
Nutrients decrease the pH of the water, causing it to become increasingly acidic
Nutrients change the salinity of the water
Wetlands filter out runoff that may contain nutrients
Nutrients in the water cause too much algae growth, which decrease the level of oxygen in the water
True or False: A substance with a pH of 9 is considered basic.
True
False
Which glass contains water with high turbidity?
Glass 1
Glass 2
A body of water showed a high turbidity level, high levels of nitrates and phosphates, a pH of 7.5, and low dissolved oxygen levels. Would this body of water be considered healthy?
Yes
No
These are the physical parameters of water quality except
turbidity
salinity
temperature
BOD (biochemical oxygen demand)
Runoff of sewage and agricultural wastes into coastal waters introduce
algae growth
rainwater
surface runoff
oil spill
improved water quality can be achieved by
appropriate use of water
careful water storage and handling
proper land management
all of the above
