Greenhouse EffectGreenhouse Effect- Natural Heating - Natural Heating of Earth’s surface of Earth’s surface

by certain by certain atmospheric gasesatmospheric gases

Greenhouse GasesGreenhouse GasesWater Vapor HWater Vapor H2200

Carbon Dioxide C0Carbon Dioxide C022

Methane CHMethane CH44

Without the Without the Greenhouse Effect Greenhouse Effect the the

Earth would be too Earth would be too cold for human lifecold for human life

Greenhouse EffectGreenhouse Effect

Greenhouse EffectGreenhouse Effect

Greenhouse GasesGreenhouse Gases

Carbon DioxideCarbon DioxideMethaneMethaneNitrous OxideNitrous OxideCFCsCFCsWater VaporWater Vapor

Without a Greenhouse Effect…Without a Greenhouse Effect…

Problem Solved?Problem Solved?– Earth would be 33 Earth would be 33

degrees Celsius coolerdegrees Celsius cooler

Global WarmingGlobal Warming-enhanced -enhanced

greenhouse effect greenhouse effect resulting in a rise in resulting in a rise in global temperaturesglobal temperatures

Possible Results of Possible Results of continuedcontinued

Global Warming Global Warming

Polar Ice Caps Polar Ice Caps May MeltMay Melt

Sea Level May RiseSea Level May Rise

Deserts Could SpreadDeserts Could Spread

Frequency and Frequency and Severity of Storms Severity of Storms

may Increasemay Increase

Scientist DiscrepancyScientist Discrepancy- some argue rising - some argue rising

temperatures are due temperatures are due to natural cyclesto natural cycles

Causes for Causes for increasing C0increasing C022

Causes for Causes for increasing C0increasing C022

AutomobilesAutomobilesBurning Fossil FuelsBurning Fossil Fuels

DeforestationDeforestation

How we can How we can reduce our effectsreduce our effects

How we can How we can reduce our effectsreduce our effects

Conserve EnergyConserve EnergyRecycleRecycleCar PoolCar Pool

Ozone DepletionOzone Depletion

Ozone DepletionOzone Depletion- a thinning of the - a thinning of the

ozone layerozone layer

Ozone – OOzone – O33

Ozone – Ozone – Blocks the harmful Blocks the harmful UV radiation from UV radiation from

the sunthe sun

Ozone is made by Ozone is made by chemical reactions chemical reactions involving UV lightinvolving UV light

Ozone Depletion is Ozone Depletion is a major concern a major concern

near the near the South PoleSouth Pole

Ozone Depletion is Ozone Depletion is caused by caused by

increased levels of increased levels of CFC’s in the CFC’s in the atmosphereatmosphere

““Ozone Hole”Ozone Hole”There is NO HoleThere is NO HoleIt is a thinning of It is a thinning of the ozone in the the ozone in the Polar RegionsPolar Regions