Question of the Day Do you think climate change is really happening? Explain your view

Human Disturbances

Climate vs. Weather What’s the difference? What’s the difference? Weather – Weather – Primarily deals with temperature, humidity, wind, rainfall, etc UP TO TWO WEEKSPrimarily deals with temperature, humidity, wind, rainfall, etc UP TO TWO WEEKS Climate – Climate – Primarily deals with temperature, humidity, wind, rainfall, etc OVER LONG PERIODS OF TIMEPrimarily deals with temperature, humidity, wind, rainfall, etc OVER LONG PERIODS OF TIME

Climate Change – General Info The majority of greenhouse gasses have been emitted since the beginning of The majority of greenhouse gasses have been emitted since the beginning of the industrial revolutionthe industrial revolution The burning of fossil fuels (and biomass) releases carbon that has been trapped The burning of fossil fuels (and biomass) releases carbon that has been trapped for millions of yearsfor millions of years This carbon is released in the form of This carbon is released in the form of CO 2CO 2 The three main fossil fuels are The three main fossil fuels are coal, oil and natural gascoal, oil and natural gas Slash and burn farming reduces the ability of Earth’s forests to soak up the CO 2. This also releases the Slash and burn farming reduces the ability of Earth’s forests to soak up the CO 2. This also releases the Carbon that was trapped in the trees, into the atmosphere in the form of carbon dioxideCarbon that was trapped in the trees, into the atmosphere in the form of carbon dioxide

Population size and Global Warming Industrializing nations Industrializing nations What is the main issue with industrializing nations that have very large populations? What is the main issue with industrializing nations that have very large populations? They are burning fossil fuels at an enormous rate (more people = more pollution)They are burning fossil fuels at an enormous rate (more people = more pollution) What are two industrializing nations with large populations? What are two industrializing nations with 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?: Greenhouse effect – process which infrared radiation is trapped near Earth’s surface, which keeps the planet warm Greenhouse effect – process which infrared radiation is trapped near Earth’s surface, which keeps the planet 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

2 nd Unit # 3 Book Work Assignment: Read pages and answer Lesson Review #s 1- 6 on page 205 Read about the Carbon Cycle (pages ) AND study the diagram on page 166, then answer questions 1-3 on page 168. PARTNER = OK 3 OR MORE = NOT OK 1 st Unit # 3 Book Work Assignment:

How are greenhouse gases produced? One example of a greenhouse gas = _____. Question of the Day 12-1

Describe and interpret patterns of change in natural systems. Analyze patterns of change in natural systems over time. Analyze patterns of change in natural systems over time. Discuss the greenhouse effect. Question of the Day 12-1

Evidence of Global Warming…?

m/howstuffworks/203-what- is-the-greenhouse-effect- video.htm m/howstuffworks/203-what- is-the-greenhouse-effect- video.htm What is the greenhouse effect? /videos-a-climate-minute- the-greenhouse- [Hi3ERes0h84].cfm /videos-a-climate-minute- the-greenhouse- [Hi3ERes0h84].cfm

Greenhouse Effect MSNBCMSNBC msnbc.msn.c om/id/ http://www. msnbc.msn.c om/id/ http://www. msnbc.msn.c om/id/ http://www. msnbc.msn.c om/id/

Greenhouse Effect Is the greenhouse effect a good thing? Is the greenhouse effect a good thing? YES – Earth would be much cooler without itYES – Earth would be much cooler without it What is the problem? What is the problem? The problem is that TOO much of the sun’s radiation is being trapped inside our atmosphereThe problem is that TOO much of the sun’s radiation is being trapped inside our atmosphere What is causing the problem? What is causing the problem? That too many greenhouse gasses are trapping more of the suns energyThat too many greenhouse gasses are trapping more of the suns energy

Climate Protest

CO 2 and Temp What we see is a positive correlation between 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 highest level in 150,000 years (actually 650,000 years)

Reading the graphs…

Carbon Dioxide Variations

CO 2 Concentrations

Average Temp Increase - (Since 1855) Current Temperature Increase: Current Temperature Increase: Overall temperature on earth (near the surface) has increased 1.33 degree Fahrenheit (± 0.32 F) in the 20th century.Overall temperature on earth (near the surface) has increased 1.33 degree Fahrenheit (± 0.32 F) in the 20th century. Models predict that the temperature will rise a further 2.0 to 11.5 °F in the 21 st Century.Models predict that the temperature will rise a further 2.0 to 11.5 °F in the 21 st Century. Hottest Years in 150 years Hottest Years in 150 years The hottest years recorded, EVER since recording began in 1880 were within the last 10 yearsThe hottest years recorded, EVER since recording began in 1880 were within the last 10 years

One thing you know about greenhouse gases?

2 nd Unit # 3 Book Work Assignment: Read pages and answer Lesson Review #s 1- 6 on page 205 Read about the Carbon Cycle (pages ) AND study the diagram on page 166, then answer questions 1-3 on page 168. PARTNER = OK 3 OR MORE = NOT OK 1 st Unit # 3 Book Work Assignment:

5-10 ATB Which greenhouse gas typically comes from agriculture? Which greenhouse gas typically comes from agriculture? Today: Today: Discuss hurricane strengthDiscuss hurricane strength Discuss melting arctic icesDiscuss melting arctic ices

Where is the temperature increase? Most of the increase is ____near the poles____ Most of the increase is ____near the poles____

Why is slash and burn farming a “double whammy”? Why is slash and burn farming a “double whammy”? Objectives: Objectives: Discuss the greenhouse effectDiscuss the greenhouse effect Question of the Day 12-1

Sea Level Rise What two factors will cause the sea level to rise? What two factors will cause the sea level to rise? Melting of land ice (why not floating glaciers?)Melting of land ice (why not floating glaciers?) Thermal expansion of the oceanThermal expansion of the ocean

5-12 ATB Draw a picture indicating how the greenhouse effect works. Be sure to label and include: light waves, infrared radiation and the greenhouse gas layer and earth Draw a picture indicating how the greenhouse effect works. Be sure to label and include: light waves, infrared radiation and the greenhouse gas layer and earth Today: Today: Describe effects of climate changeDescribe effects of climate change

Shifts in weather patterns Some areas will get more precipitation, others less Some areas will get more precipitation, others less What causes seasons? What causes seasons? QvPLWziQhttp:// QvPLWziQhttp:// QvPLWziQhttp:// QvPLWziQ

Hurricane Strength As ocean waters warm, we can expect to see As ocean waters warm, we can expect to see More intense hurricanesMore intense hurricanes Show videoShow video

Arctic Ices Shrinking North Pole ice melts and freezes each year North Pole ice melts and freezes each year BUT, it’s melting more and freezing less than ever before BUT, it’s melting more and freezing less than ever before ain_sea%20ice%20yearly_NASA%20 WebV_1.mpg ain_sea%20ice%20yearly_NASA%20 WebV_1.mpg ain_sea%20ice%20yearly_NASA%20 WebV_1.mpg ain_sea%20ice%20yearly_NASA%20 WebV_1.mpg

Effects of Climate Change Melting land glaciers Melting land glaciers Melting arctic ice Melting arctic ice Hurricane strength increase Hurricane strength increase Shifts in weather patterns Shifts in weather patterns

ATB Figure the phrase in the box Figure the phrase in the box What are three effects will we see because of global warming? What are three effects will we see because of global warming? Today: Today: Get out your notes…Get out your notes… Discuss several actions we can take to slow global warmingDiscuss several actions we can take to slow global warming ALL World