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Copy of Ozone Layer Depletion

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Krish Kajenthiran

on 13 January 2014

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Transcript of Copy of Ozone Layer Depletion

Human Activities that Affect the Ozone Layer
Ozone Layer
If we didn't do anything to help with the ozone layer depletion there can be many consequences. The depletion of the Ozone layer can cause many damages to your health. Like for example you can get skin cancer, sunburns and premature of the skin. It can also damage the marine life and agriculture by reducing the growth of major crops and by threatening vital marine life like plankton. There are also many more effects.
What would happen if we didn't do anything about this?
The natural sunscreen of the Earth is called the

layer. The
Layer shields us from the sun's damaging
ultraviolet radiation.
Layer is consisted of fragile band of gases beginning 15 kilometers above our planet, and reaching up to 40-kilometers above the plant. Human activities have caused a substantial thinning of the
Layer which causes the Earth's
Layers to not only decrease over the North and South Poles, but right over our heads.
Changes to be Made
Many human activities affect the state of the Ozone Layer. Activities that involve chlorine and bromide are depleting our Ozone Layer. Scientific evidence says that the Ozone is being destroyed by manufactured chemicals containing chlorine and bromine.
Ozone depleting substances
(ODS) are very stable, non-toxic and environmentally safe in the lower atmosphere but when they float up into the stratosphere the ultra violet rays, releasing the chlorine and bromine which is later depleting the ozone at a rapid rate.
Location of the Ozone Hole in Antarctica
one way you can help is by unplugging any electronic appliances when not in use
plant trees to protect the environment
you can replace old refrigerators and air conditioners

By doing all of these we can reduce the chances of being affected by the depletion of the ozone layer
5 Definitions
Dobson Unit
: a unit of measurement for ozone in the atmosphere
a colourless gas with a chlorine-like odour, formed by an electric discharge in oxygen
any of various gaseous compounds of carbon, hydrogen, chlorine, and fluorine,
Ozone Depleting Substances
compound that contributes to stratospheric ozone depletion. Ozone-depleting substances (ODS) include CFCs, HCFCs, halons, methyl bromide, carbon tetrachloride, and methyl chloroform. ODS are generally very stable in the troposphere and only degrade under intense ultraviolet light in the stratosphere. When they break down, they release chlorine or bromine atoms, which then deplete ozone.
:any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.
Ozone levels Decreasing after 1960
Extreme UV-Rays
A Map of the atmosphere
ozone layer protects us from dangerous UV rays
there are negative and positive impacts
it can cause skin cancer
we can help by doing many things like planting trees
if we protect the ozone layer then in the future there will be a lower risk of getting affected
Supporting Ideas/Summary
The Impact of UV Rays
http://ec.gc.ca/ozone/default.asp.Date Modified: 2010-05-25.Environment Canada. December 27th 2013.
http://www.env.gov.bc.ca/epd/bcairquality/101/ozone-depletion-intro.html.Date Modified-.B.C air quality
The History Behind the Ozone.Date of publication: 2000-12-30, Cambridge University, Dec. 30 2013
Thermal Image Of The Ozone Hole.2002.NOAA Earth System Research Laboratory December 28 2013
Graph of the Ozone. 2000. The History Behind the Ozone December 30 2013
Layers of Atmosphere.2003,Atmosphere info. December 29th 2013
Heat Wave.2002. Santa Barbara College..January 3 2014

Trivia Questions
Question 1. Name 3 chemicals that are unhealthy to the Earth’s ozone layer.
Question 2.What is a Dobson Unit?
Question 3.True or False. The ozone layer protects us from dangerous UV rays.
Question 4. True or False. Depletion of the ozone layer can cause lung cancer.
Question 5. This blank cancer happens when you are exposed to too much UV rays, and it occurs on the longest organ on your body.
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