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Water on Earth

Total questions: 30

Worksheet time: 20mins

Name
Class
Date
1.
What percent of the Earth is water?
a)
59%
b)
69%
c)
71%
d)
80%
2.
The average person uses __ gallons of water a day
a)
10
b)
40
c)
60
d)
100
3.
What percentage of water on Earth is salt water?
a)
55
b)
71
c)
84
d)
97
4.
Most of Earth's fresh water is found
a)
Frozen in glaciers
b)
Underground
c)
In the Great Lakes
d)
In Oceans
5.

Three percent of the earth's water is __________.

a)

ice water

b)

fresh water

c)

salt water

d)

rain water

6.

Which of the following is an example of precipitation?

a)

sleet

b)

hail

c)

snow

d)

all of the above

7.

If groundwater reaches earth's surface, how does it reenter the water cycle?

a)

by transpiration

b)

by evaporation

c)

by accumulation

d)

it can't

8.
What is it called when plants give off water vapor as a waste product?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
9.
Instead of using his bike to go to places, a college student uses his car. What type of pollution would this cause?
a)
Nutrient
b)
Bacterial
c)
Toxic
10.
A farmer is storing the manure from his farm in large piles next to the river. What type of pollution would this cause?
a)
Toxic
b)
Bacterial
11.
Someone drains used car oil and anti-freeze onto the ground. What type of pollution would this cause?
a)
Toxic
b)
Bacterial
12.
The Harrison's decided to cut down the trees and the brushes that were obstructing their view. This left an open area with no vegetation between the house and the lake. What type of pollution would this cause?
a)
Sediment
b)
Nutrient
13.
Which of the following is NOT a type of toxic pollution?
a)
herbicides
b)
pesticides
c)
soil
d)
solvents
14.
How can nutrients be a pollutant?
a)
not enough nutrients
b)
too many nutrients
c)
lack of specific nutrients
d)
imbalance of nutrients
15.
Dirt, sand and silt are classified as what type of pollution?
a)
toxins
b)
sediment
c)
nutrient
d)
bacterial
16.

Fertilizer, sewage, and animal feces can wash in to water, leading to...

a)

thermal pollution

b)

eutrophication

c)

photosynthesis

d)

industrial pollution

17.

Water that is stored in pores, soil, sediments and rocks is known as_____________?

a)

salt water

b)

freshwater

c)

soil water

d)

groundwater

18.

How can we help prevent water pollution?

(There is more than one answer.)

a)

Use less detergents

b)

Do not pour grease down the drain

c)

Allow farm waste to wash off into the lakes.

d)

Use less fertilizers on yards and crops

19.

How is fresh water used in industry?

a)

in manufacturing processes

b)

to generate power

c)

in the disposal of waste products

d)

all of the above

20.

Point source pollution and non-point source pollution differ in

a)

the number of sources from which the pollution is discharged

b)

the kind of biological agents causing the pollution

c)

whether the source of pollution is agricultural or industrial

d)

whether the pollutants are chemical or physical agents

21.

Sewage leaking from a pipe.

a)

Point Source Pollution

b)

Non-point source pollution

22.

Septic tank leaking and contaminating groundwater.

a)

Point Source Pollution

b)

Non-point source pollution

23.

In a home residence,

how is most of the water used?

a)

Toilet

b)

Bath/shower

c)

Faucet

d)

Dishwasher

24.
Which is the opposite of condensation?
a)
runoff
b)
evaporation
c)
precipitation
d)
transpiration
25.

Which of the following affects how freshwater is used?

a)

Age

b)

Population size

c)

Education

d)

GPA

26.
Dirt, sand and silt are classified as what type of pollution?
a)
toxins
b)
sediment
c)
nutrient
d)
bacterial
27.

The waste from a pig farm is washing off into a river during rainstorms.

a)

Point source

b)

Non-point source

28.

What does EPA stands for:

a)

Environmental Protection Agency

b)

Emergency Patrol Academy

c)

Environmental Protection Academy

d)

Emergency Protection Agency

29.

In the process of eutrophication, dissolved oxygen levels decrease in water bodies because of ______

a)

Decomposition of dead organisms

b)

Evaporation

c)

Drought

d)

None of these

30.

In industrial water use, what is most of it used for?

a)

Toilets

b)

Cooling power plants

c)

Making goods

d)

Waste disposal

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