The Ozone Layer (Questions)
Instructions: Read the text and answer the questions below.
(A) Which paragraphs discuss the following?
1. Why the ozone hole appears and disappears over the Antarctic
2. Levels of ozone in the stratosphere in different time periods
3. An agreement between different governments to reduce emissions
4. How ozone levels have affected global warming
5. The discovery that chlorine may be damaging to the ozone
(B) Find the following words in the text and write their definitions:
Paragraph
Number
1
Word
atmosphere
ozone
radiation
stratosphere
2
destruction
3
compound(s)
5
industrial
Nobel Prize
6
aerosol
7
cloud(s)
8
recovery
Meaning
(C) Answer the following questions about the text.
1. Why is the ozone layer important for humans?
2. Which chemicals destroy the ozone or cause it to stop producing?
3. Name three appliances that can produce CFCs.
4. What does ‘NASA’ stand for?
5. What is one possible benefit of the falling levels of ozone?
The Ozone Layer (Answer Key)
Instructions: Read the text and answer the questions below.
(A) Which paragraphs discuss the following?
1. Why the ozone hole appears and disappears over the Antarctic (7)
2. Levels of ozone in the stratosphere in different time periods (2)
3. An agreement between different governments to reduce emissions (6)
4. How ozone levels have affected global warming (9)
5. The discovery that chlorine may be damaging to the ozone (4)
(B) Find the following words in the text and write their definitions:
Paragraph
Number
1
Word
atmosphere
Meaning
the layer of gases surrounding the Earth or another planet.
ozone
3
a colorless, toxic gas formed from oxygen by electrical discharges or
ultraviolet light.
radiation
the emission of energy as electromagnetic waves or as moving
subatomic particles.
stratosphere the layer of the earth's atmosphere above the troposphere, extending
about 50 km above the earth's surface.
destruction
the action or process of causing so much damage to something that it
no longer exists or cannot be repaired.
compound(s) a thing that is composed of two or more separate elements.
5
industrial
2
6
aerosol
7
cloud(s)
relating to economic activity concerned with the processing of raw
materials and manufacture of goods in factories.
a prize awarded annually for outstanding work in physics, chemistry,
physiology or medicine, literature, economics, and the promotion of
peace.
a substance enclosed under pressure and able to be released as a fine
spray.
a visible mass of condensed water vapor floating in the atmosphere.
8
recovery
a return to a normal state of health, mind, or strength.
Nobel Prize
(C) Answer the following questions about the text.
1. Why is the ozone layer important for humans?
It protects them from ultraviolet radiation, which can cause skin cancer and
other serious health problems.
2. Which chemicals destroy the ozone or cause it to stop producing?
nitrogen compounds
chlorine / CFCs (chlorofluorocarbons)
bromine
3. Name three appliances that can produce CFCs.
refrigerators
air conditioners
aerosol cans
4. What does ‘NASA’ stand for?
National Aeronautics and Space Administration
5. What is one possible benefit of the falling levels of ozone?
It may reduce global warming.