global warming & ozone depletion

GLOBAL WARMING &GLOBAL WARMING &OZONE DEPLETIONOZONE DEPLETION

By : J.JefrinaBy : J.Jefrina

Grade-8Grade-8

GLOBAL WARMINGGLOBAL WARMINGWhat is global warming?What is global warming?Global Warming is the increase of Global Warming is the increase of

Earth's average surface temperature Earth's average surface temperature due to effect of greenhouse gases, due to effect of greenhouse gases, such as carbon dioxide emissions such as carbon dioxide emissions from burning fossil fuels or from from burning fossil fuels or from deforestation, which trap heat that deforestation, which trap heat that would otherwise escape from Earth. would otherwise escape from Earth. This is a type of This is a type of greenhouse effectgreenhouse effect.. It It is also called the earth fever.is also called the earth fever.

Factors responsibleFactors responsibleNATURAL FACTORS:NATURAL FACTORS: Changes in Solar OutputChanges in Solar Output Changes in the Earth’s OrbitChanges in the Earth’s Orbit The Greenhouse EffectThe Greenhouse Effect AerosolsAerosols

HUMAN FACTORS:HUMAN FACTORS: Enhancing the Greenhouse EffectEnhancing the Greenhouse Effect Land Use ChangeLand Use Change Atmospheric aerosolsAtmospheric aerosols Burning of Fossil Fuels for EnergyBurning of Fossil Fuels for Energy

Our Part to Reduce Global Our Part to Reduce Global WarmingWarming

Reduce, Reuse, Recycle Reduce, Reuse, Recycle Use Less Air Conditioning (A/C)Use Less Air Conditioning (A/C)Change a Light BulbChange a Light BulbSwitch OffSwitch OffPlant a TreePlant a TreeEtc,.Etc,.

Ozone DepletionOzone Depletion

What Is Ozone Depletion:What Is Ozone Depletion:

Ozone layer depletion, is simply the wearing Ozone layer depletion, is simply the wearing out (reduction) of the amount of ozone in out (reduction) of the amount of ozone in the stratosphere. Unlike pollution, which the stratosphere. Unlike pollution, which has many types and causes, Ozone has many types and causes, Ozone depletion has been pinned down to one depletion has been pinned down to one major human activity.major human activity.

Factors ResponsibleFactors Responsible

Chlorofluorocarbons (CFCs) Chlorofluorocarbons (CFCs) Halons Halons Methyl Chloroform Methyl Chloroform Carbon Tetrachloride Carbon Tetrachloride Hydrofluorocarbons (HCFCs) Hydrofluorocarbons (HCFCs)

Our Part to Reduce Ozone Our Part to Reduce Ozone DepletionDepletion

► Minimize high altitude aircraft flights (oxygen Minimize high altitude aircraft flights (oxygen reduction and water vapour deposition)reduction and water vapour deposition)

► Minimize rocket flights (water vapour Minimize rocket flights (water vapour deposition)deposition)

► Encourage growth of plants that produce Encourage growth of plants that produce oxygen, discourage deforestation .oxygen, discourage deforestation .

► Decrease / control releases of high temperature Decrease / control releases of high temperature steam / moisture to the atmosphere .steam / moisture to the atmosphere .

Be The Change , You Wish To See In This World