SMK KULAI BESAR
SCIENCE FORM 1NAME : THULSIRAM A/L KUMARASWARAN
CLASS : 1 RK 2
TEACHER’S NAME : TEACHER NUR HIDAYU BINTI MOHD NAIM
THINNING OF THE OZONE LAYER
INTRODUCTION OF THE OZONE LAYER
INTRODUCTION OF THE OZONE
LAYER
THE OZONE LAYER IS A REGION IN THE STRATOSPHERE,
BETWEEN SEVENTEEN AND TWENTY-FIVE KILOMETRE ABOVE
THE EARTH ‘S SURFACE
THE OZONE LAYER CONTAINS HIGH
CONCENTRATION OF OZONE MOLECULES ,
O3 THAT ABSORB ULTRAVIOLET
RADIATION AND SHIELD ORGANISMS FROM ITS DAMAGING EFFECTS
THINNING OF THE OZONE LAYER
THINNING OF THE OZONE LAYER
THE THINNING OF THE OZONE
LAYER IS MAINLY DUE TO CHLOROFLURO
CARBONS (CFC).
ONCE IN THE STARTOSPHERE,
CFC ARE BROKEN DOWN
BY ULTRAVIOLET
RAYS.
THESE CHLORINE
RADICALS BRAKE DOWN OZONE
MOLECLUES , O3 IN A CHAIN REACTION.
AS A RESULT , THE HIGHLY REACTIVE CHLORINE
RADICALS ( CI ) ARE RELEASE.
THE EFFECTS OF OZONE DEPLETION
THE EFFECTS
OF OZONE DEPLETION
EXCESSIVE ENTERING OF ULTRAVIOLET RADIATION TO THE EARTH ‘S
SURFACE
LEAD TO HIGHER RISK OF SKIN
CANCER , CATARACTS AND
SUNBURNS DUE TO PROLONGED
EXPOSURE TO ULTRAVIOLET RADIATION
REDUCE THE NUTRIENT
CONTENT AND CROP YIELDS DUE TO ULTRAVIOLET
RADIATION
LEAD TO THE INCREASE OF THE
EARTH ‘S TEMPERATURE
THE PICTURES OF THE OZONE LAYER
UV protection by the Ozone Layer
Layers of the Atmosphere
The Ozone Layer
MAN-MADE POLLUTATS BURN AHOLE IN THE AZONE LAYER
CFC and HCFC Aerosols,refrigerants,air-conditioning
HalonsAgriculturul pesticidesMethly bromide
Extinguishers
THE THINNING OF THE OZONE LAYER HAVE SOMETHING IN COMMON WITH
GREENHOUSE EFFECTS
The picture in the above slide is about iceberg which is a very huge ice that contain most of the sea water.If there is a hole in the ozone layer than the iceberg will melt and will cause this:
WORDS HARD TO UNDERSTAND
OZONE HOLE
• A term invented to discribe a region of a very low ozone concentration above the antartic that appears and disappears with each austral (southern hemisphere) summer.
CLOROFLUOROCARBON (CFC)
• A family of compounds consisting of carbon,fluorine and chlorine.
ULTRAVIOLET RADIATION• A FORM OF ELECTROMAGNETIC RADIATION WITH
WAVELENGTHS JUST LESS THAN THOSE OF VISIBLE LIGHT ( FOUR TO FOUR HUNDRED NANOMETERS , OR BILLIONTHS OF A METER )
RADIATION
• ENERGY TRANSMITTED IN THE FORM OF ELECTROMAGNETIC WAVES OR SUBATOMIC PARTICLES
QUESTIONS & ANSWERS
1.What is the meaning of ozone hole?A term invented to discribe a region of a very low ozone concentration above the antartic that appears and disappears with each austral (southern hemisphere) summer.
2.What is the meaning of clorofluorocarbon?A family of compounds consisting of carbon,fluorine and chlorine.
3.What is the meaning of ultraviolet radiation?A form of electromacnetic radiation with wavelengths just less than those of visible light ( FOUR TO FOUR HUNDRED NANOMETERS , OR BILLIONTHS OF A METER )
4.What is the meaning of radiation?Enegy transmitted in the form of electromacnetic waves or subatomic particles.
THANK YOUFROM ,
Thulsiram
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