Question of the DayQuestion of the DayDo you think climate Do you think climate change is really happening? change is really happening? Explain your view. Explain your view.

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Human DisturbancesHuman Disturbances

Climate vs. WeatherClimate vs. Weather

What’s the difference?What’s the difference? WeatherWeather – –

• Primarily deals with temperature, humidity, Primarily deals with temperature, humidity, wind, rainfall, etc wind, rainfall, etc UP TO TWO WEEKSUP TO TWO WEEKS

ClimateClimate – – • Primarily deals with temperature, humidity, Primarily deals with temperature, humidity,

wind, rainfall, etc wind, rainfall, etc OVER LONG PERIODS OF OVER LONG PERIODS OF TIMETIME

Climate Change – General InfoClimate Change – General Info

The majority of greenhouse gasses have The majority of greenhouse gasses have been emitted since the beginning ofbeen emitted since the beginning of• the industrial revolutionthe industrial revolution

The burning of fossil fuels (and biomass) The burning of fossil fuels (and biomass) releases releases carboncarbon that has been that has been trapped trapped • for millions of yearsfor millions of years

This carbon is released in the form ofThis carbon is released in the form of• COCO22

The three main fossil fuels areThe three main fossil fuels are• coalcoal, , oiloil and and natural gasnatural gas

Slash and burn farmingSlash and burn farming reduces the reduces the ability of Earth’s forests to soak up the ability of Earth’s forests to soak up the COCO22. This also releases the. This also releases the• CCarbonarbon that was trapped in the trees, into the that was trapped in the trees, into the

atmosphere in the form of atmosphere in the form of carbon dioxidecarbon dioxide

Population size and Global Population size and Global WarmingWarming

Industrializing nationsIndustrializing nations What is the main issue with industrializing What is the main issue with industrializing

nations that have very large populations? nations that have very large populations? • They are burning fossil fuels at an They are burning fossil fuels at an

enormous rate (more people = more enormous rate (more people = more pollution)pollution)

What are two industrializing nations with What are two industrializing nations with large populations?large populations?• China population = 1.3 billionChina population = 1.3 billion• India population = 1.1 billionIndia population = 1.1 billion• (US population = 300 million)(US population = 300 million)

What is the Greenhouse Effect?What is the Greenhouse Effect?:: Greenhouse effectGreenhouse effect – – process which process which

infrared radiation is trapped near infrared radiation is trapped near Earth’s surface, which keeps the Earth’s surface, which keeps the planet warmplanet warm

Greenhouse gasses:Greenhouse gasses:• Carbon dioxideCarbon dioxide• Methane – come from agricultureMethane – come from agriculture• Water VaporWater Vapor• OzoneOzone• CFC’sCFC’s• Nitrogen OxidesNitrogen Oxides

22ndnd Unit # 3 Book Work Assignment: Unit # 3 Book Work Assignment:Read pages 199-205 and Read pages 199-205 and

answer Lesson Review #s 1-answer Lesson Review #s 1-6 on page 2056 on page 205

Read about the Carbon Cycle (pages 165-167) AND study the diagram on page 166, then answer questions 1-3 on page 168.

PARTNER = OK 3 OR MORE = NOT OK

11stst Unit # 3 Book Work Assignment: Unit # 3 Book Work Assignment:

How are greenhouse gases How are greenhouse gases produced? produced?

One example of a greenhouse One example of a greenhouse gas = _____.gas = _____.

Question of the DayQuestion of the Day12-212-2

Describe and interpret Describe and interpret patterns of change in natural patterns of change in natural systems.systems.

Analyze patterns of change in Analyze patterns of change in natural systems over time.natural systems over time.

Discuss the greenhouse effect.Discuss the greenhouse effect.

Question of the DayQuestion of the Day12-212-2

Evidence of Global Warming…?Evidence of Global Warming…?

http://http://videos.howstuffworks.com/videos.howstuffworks.com/howstuffworks/203-what-is-howstuffworks/203-what-is-the-greenhouse-effect-the-greenhouse-effect-video.htm video.htm

What is the greenhouse effect?What is the greenhouse effect?

http://http://greenhouseeffect.com/greenhouseeffect.com/videos-a-climate-minute-videos-a-climate-minute-the-greenhouse-the-greenhouse-[Hi3ERes0h84].cfm[Hi3ERes0h84].cfm

Greenhouse EffectGreenhouse Effect

• MSNBCMSNBC• http://http://

www.msnbc.www.msnbc.msn.com/id/msn.com/id/66629326662932

Greenhouse EffectGreenhouse Effect Is the greenhouse effect a good thing?Is the greenhouse effect a good thing?

• YES – Earth would be much cooler without YES – Earth would be much cooler without itit

What is the problem?What is the problem?• The problem is that The problem is that TOOTOO much of the sun’s much of the sun’s

radiation is being radiation is being trapped inside our trapped inside our atmosphereatmosphere

What is causing the problem?What is causing the problem?• That too many greenhouse gasses are That too many greenhouse gasses are

trapping more of the suns energytrapping more of the suns energy

Climate ProtestClimate Protest

COCO22 and Temp and Temp What we see is a positive

correlationbetween the temperature and the levels of Carbon Dioxide in the atmosphere.• This means the more

carbon dioxide there is, the higher the temperature will be

Carbon levels are now at their highestlevel in 150,000 years (actually 650,000 years)

Reading the graphs…Reading the graphs…

Carbon Dioxide VariationsCarbon Dioxide Variations

COCO22 Concentrations Concentrations

Average Temp Increase - (Since 1855)Average Temp Increase - (Since 1855) Current Temperature Increase:Current Temperature Increase:

• Overall temperature on earth (near the Overall temperature on earth (near the surface) has increased surface) has increased 1.33 degree Fahrenheit 1.33 degree Fahrenheit (± 0.32 F)(± 0.32 F) in the 20th century. in the 20th century.

• Models predict that the temperature will rise a Models predict that the temperature will rise a further further 2.0 to 2.0 to 11.5 °F11.5 °F in the in the 2121stst Century. Century.

Hottest Years in Hottest Years in 150 years 150 years• The hottest years The hottest years

recorded, EVER recorded, EVER since recording since recording began in 1880began in 1880were within were within thethelast 10 yearslast 10 years

One thing you know One thing you know about greenhouse about greenhouse

gases?gases?

22ndnd Unit # 3 Book Work Assignment: Unit # 3 Book Work Assignment:Read pages 199-205 and Read pages 199-205 and

answer Lesson Review #s 1-answer Lesson Review #s 1-6 on page 2056 on page 205

Read about the Carbon Cycle (pages 165-167) AND study the diagram on page 166, then answer questions 1-3 on page 168.

PARTNER = OK 3 OR MORE = NOT OK

11stst Unit # 3 Book Work Assignment: Unit # 3 Book Work Assignment:

Question of the DayQuestion of the Day Which greenhouse gas typically Which greenhouse gas typically

comes from agriculture?comes from agriculture?

Today:Today:• Discuss hurricane strengthDiscuss hurricane strength• Discuss melting arctic icesDiscuss melting arctic ices

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cute review vide 1:19 incute review vide 1:19 in

http://www.youtube.cohttp://www.youtube.com/watch?m/watch?v=_J1ydwbO320 v=_J1ydwbO320

Where is the temperature Where is the temperature increase?increase?

Most of the increase is Most of the increase is near the near the polespoles

Sea Level RiseSea Level Rise What two factors will cause the sea level to What two factors will cause the sea level to

rise?rise?• Melting of land ice (why not floating Melting of land ice (why not floating

glaciers?)glaciers?)• Thermal expansion of the oceanThermal expansion of the ocean

Shifts in weather patternsShifts in weather patterns

Some areas will get more Some areas will get more precipitation, others lessprecipitation, others less

What causes seasons?What causes seasons?• http://www.youtube.com/watch?http://www.youtube.com/watch?

v=DuiQvPLWziQv=DuiQvPLWziQ

Hurricane StrengthHurricane StrengthAs ocean waters warm, we As ocean waters warm, we can expect to seecan expect to see•More intense More intense hurricaneshurricanes

•Show videoShow video

Arctic Ices ShrinkingArctic Ices Shrinking

North Pole ice melts and freezes North Pole ice melts and freezes each yeareach year

BUT, it’s melting more and freezing BUT, it’s melting more and freezing less than ever beforeless than ever before

http://www.nasa.gov/mpg/http://www.nasa.gov/mpg/134728main_sea%20ice134728main_sea%20ice%20yearly_NASA%20WebV_1.mpg%20yearly_NASA%20WebV_1.mpg

Effects of Climate ChangeEffects of Climate Change

Melting land glaciersMelting land glaciers Melting arctic iceMelting arctic ice Hurricane strength increaseHurricane strength increase Shifts in weather patternsShifts in weather patterns

REVIEWREVIEW

QUICK TALKQUICK TALK

Fossil fuelsFossil fuels

Pizzly bearPizzly bear

Greenhouse gasGreenhouse gas

Methane Methane

Infrared radiationInfrared radiation

Global warmingGlobal warming

REVIEWREVIEW