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WorksheetsWater Test Review
Total questions: 100
Worksheet time: 2hrs 34mins
A water molecule has the chemical formula H2O. This means that the water molecule is made up of
a) Two hydrogen atoms and one oxygen atom
b) Two oxygen atoms and one hydrogen atom
c) Two hydrogen atoms and two oxygen atoms
d) Two molecules of water
Water molecules are attracted to each other because
a) They are all positively charged
b) Each water molecule has the same number of protons as electrons
c) The positive area of one water molecule is attracted to the negative area of another
d) All water molecules are neutral
A paper clip can stay on the surface of a sample of water because of water’s strong surface tension. Water’s surface tension is mostly a result of
a) Water’s temperature
b) The motion of water molecules
c) The attraction of water molecules
d) The impurities in the water
Water is not a good dissolver of oil mainly because
a) Oil is also a liquid
b) Oil is thicker than water
c) Oil molecules are non-polar
d) Oil is colder than water
Which is NOT one of the ways we use water?
farming
material goods
recreation
school work
True or False: Streams/creeks, Rivers, Lakes, springs, and oceans are places we get our water from.
True
False
The earth is made up of ______% salt water
3
71
83
97
We have _____________ 1% usable freshwater on Earth.
less than
more than
equal to
movement of water makes dissolved oxygen....
Increase
Decrease
photosynthesis makes dissolved oxygen
increase
decrease
What does the process of filtration do to the water?
pollutes it
increases the amount of water
purifies it
makes it unsafe for human use
The measure of biological, physical and chemical characteristics of water is called...
surface runoff
watershed
filtration
water quality
How could pesticides get into lakes and streams?
it could be washed down a storm drain
it could be sprayed too close to a stream
rain could cause it to runoff into a stream
all of the above
Measure of water clarity
Eutrophication
Turbidity
pH
Bioindicators
Organisms that indicate the health of an aquatic environment.
Non-Point Source Pollution
Point Source Pollution
pH
Biotic factors
A measure of acidity/alkalinity
Turbidity
Eutrophication
pH
Point Source Pollution
Ranges from 0 to 14; Less than 7 is acidic & greater than 7 is alkaline(basic)
turbidity
pH
dissolved oxygen
eutrophication
Which two things cause the weather of a coastal town to be warmer during the winter and cooler during the summer?
Dissolved oxygen and salinity
Water and carbon cycles
Cohesion and adhesion
Specific heat and heat capacity
