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Water Treatment

Total questions: 18

Worksheet time: 9mins

Name
Class
Date
1.
Letter A is?
a)
evaporation
b)
transpiration
c)
condensation
d)
accumulation 
2.
Letter B is?
a)
evaporation
b)
transpiration
c)
condensation
d)
accumulation
3.
Letter C is?
a)
precipitation
b)
transpiration
c)
condensation
d)
accumulation
4.
Letter D is?
a)
precipitation
b)
transpiration
c)
condensation
d)
run off
5.
Letter E is?
a)
precipitation
b)
accumulation
c)
condensation
d)
run off
6.
Letter F is?
a)
precipitation
b)
accumulation
c)
condensation
d)
run off
7.
What amount of the earth's surface is covered with water?
a)
25%
b)
72%
c)
97%
d)
99%
8.
What amount of the water on the earth is salt water?
a)
25%
b)
72%
c)
97%
d)
99%
9.
What is the main reason why water is not desalinated?
a)
don't know how
b)
too expensive
c)
difficult to transport
d)
inaccessible
10.
This frozen freshwater source is a 
a)
Iceberg
b)
Ocean
c)
Glacier
d)
River
11.
How much water on Earth is actually fresh water that humans can drink, use for heating and cooling, transportation, and industry?
a)
2%
b)
Less than 0.01 %
c)
Less than 10%
d)
Less than 1%
12.
Which of the following is a chemical added to our water to help make it safe to drink?
a)
Caffeine
b)
Acid
c)
Base
d)
Chlorine
13.

To make muddy particles in water stick together and sink, we add ____ to the water.

a)

alum (aluminum sulfate)

b)

chlorine and ammonia

c)

activated carbon

d)

ozone

14.

To remove flocs from standing water during treatment, we

a)

disinfect it

b)

filter it

c)

fluoridate it

d)

carbonate it

15.

To remove odors, tastes, and colors from water we add ____ to it.

a)

alum (aluminum sulfate)

b)

chlorine and ammonia

c)

activated carbon

d)

ozone

16.

To kill (disinfect) germs in water in the U.S., we usually add ____ to the water.

a)

alum (aluminum sulfate)

b)

chlorine and ammonia (chloramines)

c)

activated carbon

d)

sulfuric acid

17.

To adjust pH for protecting the insides of our pipes, we usually add ___ to the water.

a)

alum (aluminum sulfate)

b)

chlorine and ammonia (chloramines)

c)

activated carbon

d)

an acid or a base

18.

Surface water is water that comes from

a)

the ocean

b)

the air

c)

under the ground

d)

lakes and streams