The ozone hole is a global problem!!!!

1. Work done by:
Maria Inês Teixeira
André Rocha

2. Introduction
The stratospheric ozone layer protects life on
Earth by absorbing ultra-violet (UV) radiation
from the sun.

3. What is the ozone layer?
• Ozone containing three atoms of oxygen.
• Ozone layer mostly in the upper atmosphere
(the stratosphere) 15-30 km above the surface
of the earth and it protects life on earth by
absorbing ultra-violet (UV) radiation from the
sun.

4. Where is the Ozone Layer?
Ozone is a natural gas that is found in two different
layers of the atmosphere.
One layer, called the troposphere, is at the Earth's
surface where we live.
Ozone in the troposphere is "bad" because it dirties the
air and helps make smog, which is unhealthy to breathe.

5. Stratospheric ozone is found most often between
six and 30 miles above the Earth's surface.
Ozone in the stratosphere is
"good" because it protects life
on Earth by absorbing some of
the sun's harmful UV rays.
The other layer, called the
stratosphere, is miles above the
Earth's surface.

6. How do CFC’S destroy the ozone layer?
• Strong winds carry CFCs
up into the stratosphere
• UV radiation breaks them
apart
• Chlorine atoms destroy
ozone molecules
• Other ozone-eating
chemicals

7. Pruduction of CFC’S in 2005 and its
consumption

8. Consequences
• UV radiation is linked to skin cancer, eye and
genetic damage and immune system
suppression in living organisms, and reduced
productivity in agricultural crops and the food
chain.

9. The hole in the ozone layer also has a slight relationship with the
increase of global warming.
ice melts
hurricanes are
formed
Deserts get dry

10. The World's Reaction
• Ban on the use of CFCs
• 1985 - Vienna Convention
• 1987 - Montreal Protocol

11. Curiosity
• On September 16 people celebrate the international
day for the preservation of the ozone layer.