Presentation on theme: "Roberta Johnson, Jennifer Bergman, and David Mastie"— Presentation transcript:
1Climate and Global Change: A Toolkit for Teaching About our Ever-Changing World Roberta Johnson, Jennifer Bergman, and David MastieUCAR Office of Education and Outreach
2Commonly Accepted Definitions WeatherClimaterefers to the current atmospheric conditions (including temperature, precipitation, wind, humidity, barometric pressure) at a particular time and place.refers to the general weather patterns expected in a given area (sometimes based on the 30 year average weather). Climate may also be applied more generally to large-scale weather patterns in time or space (e.g., an Ice Age climate or a tropical climate).Or, in the words of a middle school student…."climate tells you what clothes to buy, but weather tells you what clothes to wear."
3Please Graph… Average high Average low Mean temperature Daily temperatures – highs and lowsFor February 1-10All temperatures are in FahrenheitYou decide scale, axes, and so on…all on the same graph.
4Natural Forcing Classroom Activity - Earth’s Energy Cycle: Albedo Earth’s Energy balance is determined by incoming, reflected, re-emitted, and absorbed radiation.The albedo gives the fraction of radiation that is reflected from a surface
5Biogeochemical Cycles and Climate Classroom Activity: CO2 Sourcesand SinksClassroom Activity: Carbon CycleOnline GameClassroom Activity: The NitrogenCycle Game
6Carbon Dioxide – Sources and Sinks Activity Materials for each small group:Test tube rack and 4 test tubes1 – vinegar2 – BTB1 – covered in foilOne hole stopper with tubingCotton ballsBaking soda and vinegarAluminum foilStraws
7Carbon Dioxide – Sources and Sinks Activity 1. Make a small "boat" out of foil and fill 1/2 full of baking soda.Carbon Dioxide – Sources and Sinks ActivityPart 1:Detecting Carbon Dioxide Gas2. Carefully slide the foil boat inside the vinegar test tube without spilling baking soda from the boat. Plug the test tube with the stopper and tubing.3. Place the free end of the tubing into BTB. Place a cotton ball at the neck of the BTB tube. Mix the vinegar and soda gently.What happened?
8Carbon Dioxide – Sources and Sinks Activity Part 2: Are animals a source of CO2?Place a straw in a test tube of BTB.Place a cotton ball in the test tube opening.Gently blow in the straw.Part 3: Are plants a source of CO2?Place a sprig of Elodea into a test tube of BTB.Wrap the tube in foil so that no light can get in.Place in test tube rack and leave for at least 24 hoursPart 4: Do plants take up CO2?Place unwrapped test tube with Elodea from Part 3 in light.
9Carbon Dioxide – Sources and Sinks ActivityPart 5: Are fossil fuels a sourceof CO2?Carefully untwist the tie of the exhaust filled balloon while pinching the balloon neck so the gas does not escape.Insert a straw into the neck of the balloon up to the Pinched portion while still preventing the gas from escaping.Insert the other end of the straw into a test tube of blue BTB.Insert a cotton ball at the top of the test tube.Gently release air from the balloon by slowly untwisting the neck.
14Classroom Demonstration or Activity: Thermal Expansion and Sea Level RiseMaterials:Conical flaskRubber stopper- 2 holesGlass tubeThermometerLampWatt bulbWater with blue food coloring
15400,000 years of Sea Level Change Global sea level extracted, via a hydraulic model, from an oxygen isotope record for the Red Sea over the past 470 kyr.Source: Siddall et al., Nature, 423, , 2003.A(last interglacial)B
16A: the last interglacial Key Largo, Florida129 thousand years ago,sea level > 4-6 mabove presentPhoto: Dan Muhs
17Cosquer Cave 18,000-27,000 years ago Dramatic proof of profound B: before the last retreat of the iceCosquer Cave18,000-27,000 years agoDramatic proof of profoundHistorical climate change,sea level change - andhuman adaptation
20Glaciers are Retreating Globally In Switzerland…In Alaska…
21What tools do scientists use to study past, present, and future climates? Recent past – weather recordsDistant past – ‘proxy data’– fossils, ice cores, tree rings, pollenSensors on satellites,sensors on towersComputer models
22Effects of Climate Change: Flora and Fauna Classroom Activity: PaleoclimatesAnd Pollen
23Materials for each small group: Sample of each ‘sediment’ layer (1 – 5)Pie pan and toothpicksStudent Handout sheet
24Alpine sagebrush found in woody, low-growing shrub at high altitude,cold sites.Mixed meadow species found in areas of warm summer temperatures and summer drought.Oak tree found in warm, temperate sites characterized by dry, warm summers.
25Above center, Alder tree, prefers abundant water and can grow in cool climates. Widespread in the Pacific Northwest.Above right, grasses found in very cool alpine/subalpine meadows that are cool in summer, harsh in winter, with short growing season.Above left: Englemann spruce is found in cold, usually sub-alpine sites.At right: Western Cedar found only in temperate, very moist climates.At left: Douglas Fir prefers moderately cool to warm sites & grows best in temperate, somewhat moist conditions.Lodgepole Pine found in very cool climates often at high altitudes (above 3500) at present.
27Source: World Resources 2000-2001 Time Magazine – 9 April 2001
28Climate Education Resources National Center for Atmospheric Research University Corporation for Atmospheric ResearchWindows to the UniverseProject LEARNNCAR Kids’ CrossingClimate Discovery Teacher’s Guide