EVERY ACTION COUNTS
World Ozone Day - September 16th
© Environmental Management Authority 2004
1
Let’s talk about Ozone
are carried into the stratosphere by strong
Ozone & Ozone Layer Depletion
winds, which can take from two to five years.
Ozone is a naturally occurring gas that is
When CFCs break down in the stratosphere,
found
the
they release chlorine. Each chlorine atom
atmosphere. In the layer around the Earth's
attacks ozone by joining with and breaking
surface (the troposphere), ground level or
apart as many as 100,000 ozone molecules
bad ozone pollutes the air causing smog. In
during the time it is in the stratosphere.
the upper layer (the stratosphere), good
Other ozone eating chemicals are pesticides
ozone protects life on Earth by absorbing
such as methyl bromide, halons used in fire
some of the ultra violet (UV) rays given out
extinguishers, and methyl chloroform used
by the sun.
in industries and businesses. These ozone-
in
two
different
layers
of
eating chemicals can last many many years
The ozone layer is made up of ozone
in the stratosphere, where they continuously
molecules, like Ozzy Ozone, and forms a
destroy thousands of ozone molecules.
thin shield high up in the sky. Each ozone
molecule contains three oxygen atoms. It
What Is Being Done?
protects life on Earth from the sun's
ultraviolet (UV) rays. In the 1980s, scientists
Countries around the world have seen the
began finding clues that the ozone layer was
threats created by ozone depletion and
being depleted. This depletion would allow
made an agreement called the Montreal
more UV radiation to reach the Earth's
Protocol. This Protocol seeks eliminate the
surface. Too much UV can cause bad health
use
effects like skin cancer, eye damage, and
worldwide and will help us to save Ozzy
weaken your resistance to fight diseases.
Ozone and the Ozone Layer!
In
the
past,
chemicals
were
used
a
lot
in
these
ozone-eating
chemicals
called
chlorofluorocarbons (CFCs), which are also
gases,
of
industrial
equipment such as refrigerators and air
condition units to keep things cold, and to
make foam and soaps. When these CFC
gases are released in the atmosphere they
So let’s see what you know
about Ozone Science and
how you can help save Ozzy
Ozone and the Ozone
Layer…
Adapted from Sunwise Kids (USEPA)
2
World Ozone Day - September 16th
© Environmental Management Authority 2004
Test your knowledge of ozone layer science and ozone depletion in this
crossword puzzle
1
3
6
2
4
5
7
9
8
10
11
12
13
14
15
16
17
Across








3. Microscopic animals harmed by excess UV
6. Especially harmful band of UV radiation
11. One atom of this can destroy over 100,000 ozone molecules
12. Unnatural thinning of the ozone layer by human activities
13. Skin ___: One of the worst diseases caused by too much sun
14. ___ conditioning: one type of equipment that uses CFCs
15. Unit for measuring column ozone
17. ___osphere: Part of the atmosphere containing the ozone layer
Down









1. The southernmost continent; location of the ozone hole
2. Wind pattern over Antarctica that isolates the ozone hole
4. Ozone ___: region containing most atmospheric ozone
5. Montreal ___: Treaty protecting the ozone layer
7. Chemical that makes methyl bromide an ozone-depleting substance
8. Molecule that absorbs UVB radiation from the sun, protecting Earth
9. A substitute for CFCs that's much less damaging to the ozone layer but may cause global
warming
10. Ultra___: Harmful solar radiation
16. Abbreviation for gases that deplete the ozone layer
3
World Ozone Day - September 16th
© Environmental Management Authority 2004
See if you can find these words associated with
Ozone Science and Ozone Depletion
P
B
H
J
K
M
N
W
V
U
T
N
E
V
L
O
S
B
C
A
O
I
L
D
O
B
S
O
N
T
X
S
Y
A
Z
A
D
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D
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M
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N
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R
Q
A
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F
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J
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F
G
A
D
T
N
A
R
E
G
I
R
F
E
R
G
I
U
Montreal Protocol
Refrigerant
CFC
Methyl Bromide
Halon
Phase out
Ozone
Layer
Depletion
Dobson
BFC
Vortex
HFC
UVB
Q
A
H
H
R
R
A
W
V
L
N
O
P
D
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N
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D
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P
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A
F
L
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S
Protection
Gas
Solvent
Destroy
ODS
Polar
United Nations
Hole
Chlorine
Alternative
Fumigant
Retrofit
Plankton
Cancer
4
World Ozone Day - September 16th
© Environmental Management Authority 2004
See if you can unscramble these words
associated with ozone science and ozone depletion
RACNEC
EOZNO
TRFEIRREGAN
KSCUONBL
LMOANTRE
TXEGINSUISREH
RAYLE
OSLARESO
ESATUHPO
ITONELPDE
ULAELBRM
CSANOBROHDYR
SASESNUGLS
ESRTERSOTAHP
ECHORLNI
5
World Ozone Day - September 16th
© Environmental Management Authority 2004
See if you are a smart ozone shopper …
what would you buy?
OzoMart
Wide brim hat
Armless vests
Spray-can using
CFC
Long pants
CFC
Sun block SPF 45
Umbrella
UV Protected
Sunglasses
Long sleeve shirt
Sun block SPF 8
Halon Fire
extinguisher
Tank Top
Beanie Hat
Halon
Perfume Operated
by Pump
Refrigerator using
Hydrocarbons
Spray-can using
CO2
CFC-12
Refrigerator
CO2
6
World Ozone Day - September 16th
© Environmental Management Authority 2004
See if you can pick the odd one out in these groups
and figure out what the rest have in common
1. Montreal
Agreement
Protocol
Toronto
2. Sunglasses
Long pants
Strapless top
Wide brim
hat
3. Mesosphere
Earthsphere
Troposphere Stratosphere
4. SPF 8
5. Aerosols
6. Chlorine
SPF 35
SPF 20
Extinguishers Refrigerators
Bromine
Hydrogen
SPF 15
Toasters
Halon
7
World Ozone Day - September 16th
© Environmental Management Authority 2004
Crossword Answers
3P
6
U
7
B
A
R
10
O
V
I
H
H
A
2
A
N
V
O
K
T
T
N
5
R
P
R
8
O
O
Z
V
9
11
4L
1
L
R
N
Y
A
E
R
T
12
C
E
P
L
E
T
I
O
D
F
M
O
C
I
L
13
A
N
C
E
R
C
X
T
14
R
C
I
R
A
E
T
15
16
D
O
D
C
17
T
R
A
T
B
S
O
N
C
E
O
N
L
S
S
Across








3. Microscopic animals harmed by excess UV
6. Especially harmful band of UV radiation
11. One atom of this can destroy over 100,000 ozone molecules
12. Unnatural thinning of the ozone layer by human activities
13. Skin ___: One of the worst health effects of too much sun
14. ___ conditioning: one type of equipment that used CFCs
15. Unit for measuring column ozone
17. ___osphere: Part of the atmosphere containing the ozone layer
Down









1. The southernmost continent; location of the ozone hole
2. Wind pattern over Antarctica that isolates the ozone hole
4. Ozone ___: region containing most atmospheric ozone
5. Montreal ___: Treaty protecting the ozone layer
7. Chemical that makes methyl bromide an ozone-depleting substance
8. Molecule that absorbs UVB radiation from the sun, protecting Earth
9. A substitute for CFCs that's much less damaging to the ozone layer but may cause
global warming
10. Ultra___: Harmful solar radiation
16. Abbreviation for gases that deplete the ozone layer
8
World Ozone Day - September 16th
© Environmental Management Authority 2004
N
Word Sleuth Answers
P
B
H
J
K
M
N
W
V
U
T
N
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L
O
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B
C
A
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D
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Ozone Word Scramble Answers
Cancer
Sun block
Layer
Depletion
Sunglasses
Ozone
Montreal
Aerosol
Umbrella
Stratosphere
Refrigerant
Extinguishers
Phase out
Hydrocarbons
Chlorine
9
World Ozone Day - September 16th
© Environmental Management Authority 2004
Ozomart Answers
Ozone Wise Products
Wide Brim Hat
Provides protection from the sun
Sunglasses
(UV radiation)
Long sleeve shirt
Umbrella
Sun block SPF 45
Spray-can using CO2
All items using CFC alternatives
(ozone friendly)
Refrigerator Using Hydrocarbons
Perfume Operated by Pump
Ozone Damaging Products
Armless vests
Does not provide adequate protection
from the sun
Short pants
(UV radiation)
Tank top
Beanie hat
Spray-can using CFC
Sun block SPF 8
Halon Fire extinguisher
Uses chemicals that are ozone
depleting (Halon & CFC)
CFC -12 Refrigerator
10
World Ozone Day - September 16th
© Environmental Management Authority 2004
One of these things is not like the other….
Answers
Groups
Reason
1. Montreal Agreement
Protocol
All refer to the Montreal Protocol and
international agreement for countries to
protect the ozone layer
(Toronto is a place in Canada but is not part of the title
of the agreement Montreal Protocol).
2. Sunglasses, long pants,
wide brim hat
These are all articles of clothing that protect
from UV radiation
(Strapless tops do not provide adequate protection for
your skin from UV Radiation)
3. Mesosphere,
Troposphere, stratosphere
These are all parts of the atmosphere
(Earthsphere is not a word)
4. SPF 35, SPF 20, SPF 8
All provide adequate protection from the sun
(SPF 8 does not provide adequate protection for your
skin from UV Radiation)
5. Aerosols, extinguishers,
refrigerators
All use chemicals that could deplete the
ozone layer
(Toasters do use chemicals that are harmful to the
ozone layer)
6. Chlorine, Bromine, Halon
All gases which are ozone depleting
(Hydrogen gas is not harmful to the ozone layer)
11
World Ozone Day - September 16th
© Environmental Management Authority 2004