Download Lesson 2 | Pollution

Name
Date
Class
Content Vocabulary
LESSON 2
Pollution
Directions: On each line, write the term from the word bank that correctly replaces the underlined words
in each sentence.
acid precipitation
ozone layer
global warming
photochemical smog
occur
pollution
1. Air pollution caused by sunlight interacting with waste
gases from the burning of fossil fuels can irritate the
respiratory system.
2. Contamination with harmful substances affects air, water,
and land resources.
3. When oil spills happen, sea life can be harmed.
4. Soil and plants can be harmed by rain that forms when
waste gases from automobiles combine with moisture in
the air.
5. Climate change may occur due to the increasing average
temperature of Earth.
6. Most UV radiation does not reach Earth because it is
blocked by the part of the upper atmosphere that contains
a molecule composed of three oxygen atoms.
Using Natural Resources
27
Name
Date
Content Practice A
Class
LESSON 2
Pollution
Directions: On the line before each statement, write the letter of the correct answer.
1. Pollution can come from natural events such as
A. using CFCs.
B. driving cars.
C. erupting volcanoes.
2. Harmful ultraviolet radiation from the Sun is absorbed by
A. CFCs.
B. ozone molecules.
C. acid precipitation.
3. Sunlight reacts with waste gases from the burning of fossil fuels to form
A. greenhouse gases.
B. chlorofluorocarbons.
C. photochemical smog.
4. Global warming can lead to
A. deforestation.
B. climate change.
C. ozone depletion.
5. Used motor oil should be
A. disposed of properly.
B. poured down a storm drain.
C. purified in a sewage treatment plant.
6. Water that flows over land is called
A. runoff.
B. salt water.
C. wastewater.
7. Habitats can be disturbed or destroyed when resources are removed from the
ground during
A. mining.
B. refining.
C. purifying.
Using Natural Resources
31
Name
Date
Class
Key Concept Builder
LESSON 2
Pollution
Key Concept How does pollution affect air resources?
Directions: On the line before each statement, write T if the statement is true or F if the statement is false. If the
statement is false, change the underlined word(s) to make it true. Write your changes on the lines provided.
1. Pollution is the contamination of the environment with substances that are
helpful to life.
2. The ozone layer prevents most harmful ultraviolet radiation from reaching
Earth.
3. In the 1980s, scientists warned that the ozone layer was getting thicker.
4. In the lower atmosphere, ozone is a pollutant that can harm plants and animals
and can cause lung damage.
5. Data indicate that Earth’s average temperature and increases in atmospheric
nitrogen follow the same general trend.
6. Global warming can cause the sea level to drop.
7. Greenhouse gases trap heat from the Sun, helping to keep Earth warm.
8. Gases produced by burning renewable energy resources create acid precipitation.
9. Acid precipitation can form when nitrous oxide gases react with moisture in the air.
34
Using Natural Resources
Name
Date
Class
Key Concept Builder
LESSON 2
Pollution
Key Concept How does pollution affect land resources?
Directions: On each line, write the term from the word bank that correctly completes each sentence. Each term is
used only once.
agricultural chemicals
fossil fuels
ore processors
restored
aquatic organisms
land
plants
farms
litter
pollutants
Foam containers, plastic bags, aluminum cans, and glass bottles that are dumped along
roadsides are types of (1.)
. This is one source of
(2.)
pollution. Other sources include homes,
(3.)
, industry, and mines. Farmers use
(4.)
to help (5.)
these chemicals can become (6.)
grow. However,
if they are used in excess or
if they are disposed of improperly. If they flow into streams, they can harm
(7.)
. Many industrial facilities such as oil refineries and
(8.)
produce toxic wastes. In addition, mining of
(9.)
and minerals can disturb or destroy habitats. After
the materials have been removed from the ground, the area can be
(10.)
, but it is still difficult to replace the original ecosystem.