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Worksheets#015 Water Review
Total questions: 12
Worksheet time: 6mins
The composition of surface freshwater is determined by
surface rocks
biomass
groundwater and precipitation
evaporation and precipitates
all of the above
Biomass in a lake refers to
A type of renewable energy source
The living organisms found in the water
A measurement affecting water quality.
Dissolved oxygen increases in murky water
True
False
Dissolved oxygen in a river comes from
pollution
photosynthesis
respiration
there is no oxygen in water
Why do rivers keep running after the spring melt?
It keeps raining so they keep flowing
The water recycles from the river
Ground water moves into the river
Precipitates are
minerals left behind when water evaporates
rocky areas around rivers
the result of heavy rainfall
ground water has more dissolved minerals than surface water because
It moves much slower than surface water
It moves much faster than surface water
It is more acidic than surface water
It is more basic than surface water
Respiration releases carbon dioxide which causes the
pH to lower and allows more minerals to dissolve into water
pH to increase which allows more minerals to dissolve into water
ground to absorb the pH and hold more water
What we pour on the ground affects ground water because
it moves very slowly and the pollutant can be there for thousands of years
it does not have mechanisms to filter itself
neither answer is correct
both answers are correct
Water that is at least 35,000 ppm dissolved solids is
sea water
fresh water
swamp water
It is safe to drink water that is
less than 500 ppm dissolved solids
less than 1000 ppm dissolved solids
less than 35000 ppm dissolved solids
Most of the Earth's fresh water is found in the form of
surface water
ground water
icecaps and glaciers
in other forms of water
