Global WarmingGlobal Warming

Anthony LevyAnthony Levy

Grades 9-12Grades 9-12

What is Global WarmingWhat is Global Warming

Global warming is the Global warming is the warming of the warming of the earth through earth through carbon dioxide carbon dioxide (CO2) being (CO2) being pumped into the pumped into the atmosphere from atmosphere from various sources various sources including cars and including cars and smokestacks. smokestacks.

Sources of Carbon DioxideSources of Carbon Dioxide

Over the past few centuries, Over the past few centuries, people have been burning people have been burning more amounts of fuels more amounts of fuels such as wood, coal, oil, such as wood, coal, oil, natural gas and gasoline. natural gas and gasoline. The gases formed by the The gases formed by the burning, such as carbon burning, such as carbon dioxide, are building up in dioxide, are building up in the atmosphere. The result the atmosphere. The result some experts believe is some experts believe is the Earth heating up and the Earth heating up and undergoing global undergoing global warming.warming.

What is the Greenhouse What is the Greenhouse EffectEffect

The CO2 gases trap heat like The CO2 gases trap heat like the glass in a greenhouse. the glass in a greenhouse. This is where the term This is where the term ““greenhouse effectgreenhouse effect” came ” came from.from.

Major Greenhouse GasesMajor Greenhouse Gases• Carbon dioxide (CO2 --53%)Carbon dioxide (CO2 --53%)• Methane (CH4 --17%)Methane (CH4 --17%)• Nitrous Oxide (N2O --5%)Nitrous Oxide (N2O --5%)• Ground-level Ozone (O3 --Ground-level Ozone (O3 --

13%)13%)• Chlorofluorocarbons (CFCs --Chlorofluorocarbons (CFCs --

12%)12%)• Water Vapor (H2O)Water Vapor (H2O)

Effects of Global WarmingEffects of Global Warming

Trapped heatTrapped heat Climate changeClimate change Water cycle speeds upWater cycle speeds up Glacial meltGlacial melt Ocean water expansionOcean water expansion Extreme weather eventsExtreme weather events Drastic change in Drastic change in

PrecipitationPrecipitation Increase in global Increase in global

temperaturetemperature

What’s HappeningWhat’s Happening

Scientists say that the Scientists say that the barrier insulating the ice barrier insulating the ice caps is melting. As the caps is melting. As the ice melts, big chunks of ice melts, big chunks of glaciers will break off. glaciers will break off. The ice chunks, known The ice chunks, known as icebergs, create as icebergs, create mass in the ocean. The mass in the ocean. The icebergs move the icebergs move the water causing the ocean water causing the ocean level to rise. Some of level to rise. Some of the shoreline in many the shoreline in many places will go under places will go under water.water.

Larsen B ice shelf and Antarctic PeninsulaLarsen B ice shelf and Antarctic Peninsula

What Will Happen What Will Happen

Rising global temperatures Rising global temperatures may affect local climate may affect local climate conditions. Changing conditions. Changing regional climate regional climate conditions will alter conditions will alter forests, food, and water forests, food, and water supplies. It could also supplies. It could also affect human health, affect human health, animals, and many types animals, and many types of ecosystems. Deserts of ecosystems. Deserts may expand into may expand into existing rangelands. existing rangelands.

Ways to Decrease Global Ways to Decrease Global WarmingWarming

• ConservationConservation– Reduce energy needsReduce energy needs– RecyclingRecycling

• Alternate energy Alternate energy sourcessources– NuclearNuclear– WindWind– GeothermalGeothermal– HydroelectricHydroelectric– SolarSolar– FusionFusion

Changes people can make to Changes people can make to reduce CO2 Outputreduce CO2 Output

• Drive Less: 15 miles less per week of driving (bike, carpool, Drive Less: 15 miles less per week of driving (bike, carpool, walk) eliminates 900 pounds of carbon dioxide a year.walk) eliminates 900 pounds of carbon dioxide a year.

• Clean engine oil and properly inflated tires eliminates 1000 Clean engine oil and properly inflated tires eliminates 1000 pounds of carbon dioxide a year. pounds of carbon dioxide a year.

• A hybrid or electric car eliminates 5600 pounds of carbon A hybrid or electric car eliminates 5600 pounds of carbon dioxide a year. dioxide a year.

• Replace three incandescent light bulbs to fluorescent bulbs Replace three incandescent light bulbs to fluorescent bulbs in your home and eliminate 300 pounds of carbon dioxide a in your home and eliminate 300 pounds of carbon dioxide a year.year.

• Recycling half of the aluminum, glass, plastic, and paper Recycling half of the aluminum, glass, plastic, and paper that you use reduces 2400 pounds of carbon dioxide a year. that you use reduces 2400 pounds of carbon dioxide a year.

• Turn your heater down and your air conditioner up by 3 Turn your heater down and your air conditioner up by 3 degrees and save 1050 pounds of carbon dioxide a year. degrees and save 1050 pounds of carbon dioxide a year.

ReferencesReferences

• www.fightglobalwarming.comwww.fightglobalwarming.com

• www.42explore.com/globewrm.htmwww.42explore.com/globewrm.htm

• www.nas.eduwww.nas.edu

Which is not a source of Which is not a source of Carbon Dioxide?Carbon Dioxide?

WoodWood

CoalCoal

WindWind

GasolineGasoline

A

B

C

D

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