clean air challenge sponsored by sponsor 1 sponsor 2 (sponsor logos located at end of ppt, insert...
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Clean Air ChallengeClean Air Challenge
Sponsored BySponsor 1Sponsor 2
(Sponsor logos located at end of ppt, insert them before slide #2)
Sponsored BySponsor 1Sponsor 2
(Sponsor logos located at end of ppt, insert them before slide #2)
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Clean Air ChallengeClean Air Challenge
Presented ByYour Name HereYour School Here
Presented ByYour Name HereYour School Here
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Clean Air ChallengeClean Air Challenge
•A multidisciplinary unit on urban air pollution
•Integrates current environmental information with alternative energy solutions
• With 14 lab focused activities
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What you will receive
What you will receive
•DVD (VHS optional)•Teacher Companion•Laboratory Equipment•Data Logs•Case Study Booklets•Workshop Folder
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Workshop FolderWorkshop Folder•Sponsor letter•Sample Data Log (DL)•Sample Case Study (CS)•Website and Passwords•Science Standards Correlations•Implementation Worksheet•Certificate of Participation
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Four Primary Sources of Information
Four Primary Sources of Information
• Teacher’s Companion (TC) detailed instructions, explanations, time needed, answer keys and extension activities
• Case Study (CS) Tells the story of two interns assigned to address the problem and propose a solution for city air pollution
• Data Log (DL) to record lab results• DVD (VHS on request) a visual
representation of case study
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Case Study: A Closer LookCase Study: A Closer Look• The blue booklet• Meet Andy & Lisa, Interns• Political science interns tasked with
solving the air pollution problem in their community
• The CS is a summary of their research and findings. Provides the data ….
• But your students analyze and make their own recommendations
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Mobile FocusMobile Focus• Pollution sources are considered
“Mobile” (examples: cars and trains) or “Stationary” (examples: factories and power plants).
• Mobile sources are not well regulated, while stationary sources are regulated by the EPA.
• Clean Air Challenge directs students to look at mobile sources and individual choices.
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Cherry PickingCherry Picking•You can’t do it all?!•The Implementation Worksheet is
designed to help you customize the curriculum as we go along
•We’ll be pausing occasionally to give you a chance to collaborate and reflect on your OWN customization
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CAC Program has 5 partsCAC Program has 5 parts• ONE: Does Air Pollution Affect People? • TWO: What is Air Pollution? How is it
formed? • THREE: Can the amount of air
pollution be measured? Is air pollution a problem in our community?
• FOUR: Can we make better choices to clean up our air?
• FIVE: What conclusions can we draw from our study?
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Sample Video ClipSample Video Clip•Internships and Research•Research in the State Pollution
Lab•Conversation with Dr Peters re:
Ozone•Brainstorming Ozone Reduction•Animation on Ozone Formation•Experiments with Ozone
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Part 1: Does Air Pollution Affect
People?
Part 1: Does Air Pollution Affect
People?Health Effects of
Ozone & Particulate Matter
Health Effects of Ozone & Particulate
Matter
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Part OnePart One•Does air pollution affect people?
– The first activity focuses students on WHY we care about air pollution.
– Look at the TC p. 12 •Time required—too much or too little•Required reading in CS•Pre-Lab questions and answers•Materials you will have to purchase•Sources of error•Cautions and adjustments•4 levels of assessment
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FEV1 LabFEV1 Lab
• Forced Expiratory Volume (FEV1)
• Data log p 2• TC p 12• Please use
this time for a little break also
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Clean Up!Clean Up!• Fill your jug ½ full of water and set aside
for future lab• Pour out the water in your tub and place
upside down in back of room to dry• Place the tubing in the graduated cylinder
and put both in the tub• Drape your towel over the tub• Place tubs in the rear of the room in a
single layer, please!• Thanks!
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Is the model accurate?Is the model accurate?• If you would like more information
about spirometry, contact the Respiratory Institute at www.alphamedicainc.com which is part of GlaxoSmithKline for a copy of the booklet called Simple Office Spirometry by Thomas L Petty, MD Chairman of the National Lung Health Education Program
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“The Doctor in You”“The Doctor in You”•DL p6, TC p16
–“B” activities were designed and written for upper level students
•Lets students see how doctors use FEV1/FVC ratios
•Includes simple lung disease diagnoses
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Sample Video ClipSample Video Clip
•Internships and Research•Research in the State Pollution
Lab•Conversation with Dr Peters re:
Ozone•Brainstorming Ozone Reduction•Animation on Ozone Formation•Experiments with Ozone
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Implementation Worksheet Activity 1A & 1B
Implementation Worksheet Activity 1A & 1B
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• TC p. 14 Post Lab Guiding Questions for 1A
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• TC p. 14 Post Lab Guiding Questions for 1A
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Part 2: What is Air Pollution?Part 2: What is Air Pollution?
Chemistry and Formation of Ozone &
Particulate Matter
Chemistry and Formation of Ozone &
Particulate Matter
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Part 2Part 2•What is Air Pollution?
–Case Study gives air standards for six Criteria Pollutants: Carbon Monoxide, Lead, Nitrogen Dioxide, Ozone, PM10, PM2.5 and Sulfur Dioxide.
–See pp 4-7 for EPA’s National Ambient Air Quality standards
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ParticulatesParticulates• “Particulates” refers to any solids or
liquid droplets suspended in the air• The suspension can last from
minutes (for large particles) to days (for microscopic particles)
• Elemental carbon present in some particulates absorbs pollutants and acts as a delivery system to the body
• CS p11-13
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Particles Come in Different Shapes and Sizes
Particles Come in Different Shapes and Sizes
Blood cells are 6-8 microns across
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Particulate SourcesParticulate Sources• Combustion
– Smoke, soot, ashes• Friction
– Metal pieces, tire & other road particles• Wind
– Sea salt, soil, dust• Life
– Skin cells, pollen, mites• Common student exposures include diesel
school buses, ambient air pollution, cigarette smoke (as user or second hand), fireplaces & BBQs, and living near busy roads
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PM Sources and Formation
PM Sources and Formation
Primary Particles(directly emitted)
Secondary Particles(from precursor gases)
Other(sea salt)
Other(sea salt)
Crustal(soil,dust)
Crustal(soil,dust)
Carbon(Soot)
Carbon(Soot)
MetalsMetals
NOx
Ammonia
VOCsOrganicCarbon
OrganicCarbon
SO2
AmmoniumSulfate
AmmoniumSulfate
AmmoniumNitrate
AmmoniumNitrate
Composition of PM tells us about Composition of PM tells us about the sources and formation processesthe sources and formation processes
Gas
Particle
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Getting Rid of PMGetting Rid of PM• Sedimentation (settling out) only works
for Coarse particles (above 2.5 μm)– Residence time: seconds to one day
• Condensation (via rain, fog, etc) works for Fine (2.5 μm) and larger particles– Residence time: days to weeks
• Coagulation (clumping to form larger particles) is the only thing that works for ultrafine particles– Residence time: weeks to …?
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Before we continue…Before we continue…•Turn to page 11 in your DL•Let’s collect particles to analyze
later—we will leave them outside for one hour but at school you choose–Get a Card put your name on it– ClearTape—no fingerprints
•Ozone collection if weather permits–P. 22 in DL—time one hour how to do this on a regular school day?
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More Activities on Particulates
More Activities on Particulates
•CS 11-13: Making sense of the size
•DL p 9, TC p18: Particles & You•DL p14, TC p23: Understanding
Research Results
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Health Effects of Particulates
Health Effects of Particulates
• Exposure to fine particulates can cause up to a 20% permanent decrease in lung capacity
• Living in heavily polluted areas is just as hazardous as living with a smoker
• Death rates among sick, frail, elderly and infants increase on high particulate days
Research courtesy of Dr. Peters, UC Riverside
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Implementation Worksheet Activity 2, 3A & 3B
Particles
Implementation Worksheet Activity 2, 3A & 3B
Particles
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
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Part 3: Measuring Air PollutionPart 3: Measuring Air Pollution
Concentration, Units
Concentration, Units
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Defining ConcentrationDefining Concentration• Air is 21% oxygen. That means in every
100 parts of air, 21 parts are oxygen.• The concentration of pollutants in air are
much smaller than one part per hundred. They are measured in parts per million (ppm)
• Some pollutants are found in parts per billion (ppb).
• For example: If you dropped six aspirin tablets into an Olympic size swimming pool, the concentration of aspirin would be about 1 ppb.
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ConcentrationConcentration
• This simple lab with food coloring helps to explain ppm and ppb
• DL p19 TC p25
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Particulate PollutionParticulate PollutionChicago Aug 16, 2000`PM2.5 < 10 ug/m3
Chicago, August 26, 2000PM2.5 = 35 ug/m3
Glacier National Park PM2.5 7.6 ug/m3
Glacier National Park PM2.5 21.7 ug/m3
Source: www.mwhazecam.net and Introduction to Visibility, Malm
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Implementation WorksheetActivity 4
Concentration
Implementation WorksheetActivity 4
Concentration
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
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Background Ozone Information
Background Ozone Information
• A colorless gas. • “Good up high, bad nearby” CS p. 10• Be sure to check for misunderstandings
about ozone and global warming
• Ozone (O3) is an allotrope of “normal” oxygen (O2). Another example of an allotrope: graphite and diamond are both made of pure carbon.
• Ozone is considered a “Secondary Pollutant” because it is made from other pollutants, not emitted directly.
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Nitrogen (N2)Nitrogen (N2)
•Another colorless, odorless gas•78% of the atmosphere•In high temperature combustion
such as engines and incinerators, the “air” N2 + O2 NO2
•Nitrogen dioxide is a NOX gas
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Ozone (O3) ChemistryOzone (O3) Chemistry• Pages 8-10 Case Study• Ozone formation occurs in the
presence of nitrogen dioxide (NO2)• NO2 + Sunlight NO + O• O + O2 O3
• Ozone destruction occurs in the presence of NO
• NO + O3 NO2 + O2
• This natural cycle creates a balanced amount of ozone. (Steady State)
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Ozone (O3) ChemistryOzone (O3) Chemistry
•VOC converts NO back to NO2.
•NO NO2
•As NO levels drop, Ozone accumulates
•NO + O3 NO2 + O2
• Compare to other natural cycles. For instance, what would happen to the photosynthesis cycle if all the plants or animals disappear?
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Summary reactions for ozone O3Summary reactions for ozone O3
• High Temperatures (internal combustion engines)
N2(g) + 2O2(g) → 2NO2(g)
• Sunlight reaction forming ozone *Reversible*
NO2(g) + O2(g) <—> NO(g) + O3(g)
• VOC’s remove NO and Ozone remains *Non-reversible*
NO2(g) + O2(g) → NO(g) + O3(g)
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Fuel Vapors in IRFuel Vapors in IR
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AQI: Air Quality IndexAQI: Air Quality Index0-50 Good Go outside
and play!
51-100 Moderate Very sensitive people
101-150 Unhealthy for Some
Asthma, lung disease
151-300 Unhealthy for all
Reduce hard work or exercise
301-400 Very unhealthy
Don’t exercise or do hard work
401-500 Hazardous Don’t go out at all
Go to airnow.gov for the math
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Modeling Ozone FormationModeling Ozone Formation
• Your kit will include enough wooden balls (nitrogen and oxygen) and spring bonds to model ozone formation
• There is an activity in the Data Log (p 26) that uses Legos or other similar toys to simulate the ozone cycle (TC p 31)
• It can also be done with a few decks of cards and some paperclips
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Sample Video ClipSample Video Clip
•Internships and Research•Research in the State Pollution
Lab•Conversation with Dr Peters re:
Ozone•Brainstorming Ozone Reduction•Animation on Ozone Formation•Experiments with Ozone
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Collecting ParticlesCollecting Particles
• DL p 9, TC p18 go get your cards & ozone• Examine with a magnifier or scope• It just takes an index card and CLEAR
tape• Hole punch, X-Acto knife• Other methods?• Vaseline, fixatives• Save slides from
other locations
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If the weather is warm Measuring Ozone: Ecostrips
If the weather is warm Measuring Ozone: Ecostrips•Read
the color in PPB
•DL p22•TC p27• KI paper
TC p.102
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Do It Yourself OzoneDo It Yourself Ozone• Tesla Coil (ask the
Physics teacher!)• Erlenmeyer flask
(stopper, nail)• 18 gauge copper wire
(naked)• Aluminum foil, clip
leads, nail• Citrus peels (for VOC)• Balloon, glove,
rubber band, etc.• TC p 100
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Flask filled with ozone – approximately 1000+ ppb!
Insert rubber band into ozone-laden flask
Rubber band cracks due to oxidation by ozone within five minutes
Ozone reacting in a bottle….
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Converting gas (Ozone, VOC) to particles…
An orange serves as the volatile organic compound (terpenes)
Ozone gas in the bottle with no particles
Inserting a scored orange peel adds VOCs that react with ozone to form particles
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Implementation WorksheetActivity 5 & 6
Ozone strips and modeling ozone
Implementation WorksheetActivity 5 & 6
Ozone strips and modeling ozone
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
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Weather & Air BasinsWeather & Air Basins
• Two activities in the DL (7A and 7B)• These are graphing and/or
interpretation exercises. See p 28.• A sample packet of data for 7A is in
your folder for reference• Available on-line at:
www.clean-air-challenge.com/data
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Have students compare watersheds and air basins to help with understanding.
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Implementation WorksheetActivity 7A & 7B
Graphing pollution & weather
Implementation WorksheetActivity 7A & 7B
Graphing pollution & weather
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
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Part 4: Making ChoicesPart 4: Making Choices
Alternative Fuels and Background ChemistryAlternative Fuels and
Background Chemistry
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Alternative FuelsAlternative Fuels
• Biodiesel• Electricity• Hybrids• Ethanol• Diesel• Compressed Natural
Gas• Liquefied Petroleum
Gas• Reformulated Gasoline• Hydrogen & Fuel Cells• Plug-in Hybrids
Toyota Prius
Chevrolet Volt
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Energy by Mass vs Energy by Volume
Energy by Mass vs Energy by Volume
•The classic “Calories in a Candle” lab with a twist
•Also a good lunch break for us!
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Conducting the Energy by Mass and Energy by Volume Lab
Conducting the Energy by Mass and Energy by Volume Lab
Measure the masses of the candle & paraffin.
Measure the volume of the paraffin block.
Data log p35
TC p 38
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Heat 50 mL of water until the candle has been burned completely.
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Be sure to measure the temperature of the water before AND after burning the candle!
Calculate the Energy by Mass and Energy by Volume of the Candle.
For extra: burn other fuels (alcohol or make sterno TC p. 103)
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Clean UpClean Up
•Throw away hanger, toothpicks and play-doh.
•Place foil dish, graduated cylinder, thermometer, matches and soda can (if not sooty) back in baggie.
•If sooty recycle!•Place baggie in bin.
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Implementation WorksheetActivity 8- Candle lab
Implementation WorksheetActivity 8- Candle lab
•What unit will I put this in?
•What modifications or support will I need?
•Notes for successful implementation…
•What unit will I put this in?
•What modifications or support will I need?
•Notes for successful implementation…
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Compare the Energy by Mass & Energy by Volume for different
fuels (DL p55)
Compare the Energy by Mass & Energy by Volume for different
fuels (DL p55)Fuel
E by Mass (J/g)
E by Volume (J/mL)
Diesel (C12H23) 47,000 35,700
RFG (C8H18) 41,300 31,300
Biodiesel 42,000 30,000
LPG (C3H8) 46,100 24,000
Ethanol (E85) (C2H5OH) 29,100 22,700
LNG (CH4) 48,000 18,600
CNG (CH4) 50,000 8,300
Paraffin (C20H42) 7,900 7,100
Hydrogen 120,000 5,000
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Producing A FuelProducing A Fuel• Yeast Fermentation• Great chance to discuss “Experimental vs
Control”• Good as either demo or experiment
•DL p 41•TC p 42
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DistillationDistillation• Formal distillation
setups can be intimidating…
• A simple distillation apparatus can be constructed from a funnel and some tubing.
• The other equipment is simply a hot plate, two beakers, a test tube and some ice.
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Implementation WorksheetActivity 9 yeast
Implementation WorksheetActivity 9 yeast
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
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Fuel Environmental ConcernsFuel Environmental Concerns
• What else do we need to consider when choosing a new fuel?
• How does it effect the rest of the environment?
• What if it spills?• How volatile is it?• How soluble is it?
Non-polar papers help clean up an oil spill on water. Kitty litter is good on garage floors.
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PolarityPolarity• Why do things dissolve? Polarity!• Polarity is caused by certain bonds within the
molecule.• Water, glass, ceramic are polar• Oil, plastic are non-polar• Most alcohols are a little of both• “Like dissolves like”• The more polar a spilled fuel is, the more
soluble it is, and the bigger the threat to the water supply
• The less polar a spilled fuel is, the more volatile it is, and the bigger the threat to the air quality
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SolubilitySolubility• Using cooking oil,
pure alcohol and water to test solubilities of different dyes
• Be careful with this lab – the “mess potential” is VERY high!
• DL p 48 be sure to complete p. 49 #1-3
• TC p 48
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Clean UpClean Up
• Place dyes and dropper bottles back into small baggie.
• Dump all liquids into shop towel and wipe off the spot plate as much as possible
• Wrap up shop towel with disposable pipettes and toothpicks and place in trash
• Place small supply baggie in bin• Place spot plate in communal bag for
washing
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VolatilityVolatility• You can do
this with either a balance or just by observation
• Try this one on an overhead projector!
•DL p 51•TC p 52
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Implementation WorksheetActivity 11 & 12
Solubility & Volatility
Implementation WorksheetActivity 11 & 12
Solubility & Volatility
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
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•Which fuels do you favor? –DL p54-55
•Extended reading TC p92-93•Write an essay as Lisa or Andy
with your recommendations•Write a letter or essay to your own
local politician with your suggestions, ideas, recommendations
Cross-Curricular ActivitiesCross-Curricular Activities
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Climate ChangeClimate Change•Case Study
pages 14-15
•Extended version TC 94-97
•Basics of Greenhouse Effect
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Sample Student Projects: TC p59
Sample Student Projects: TC p59
• Have sport utility vehicles increased total motor vehicle emissions?
• How does traveling by private car compare with mass transit?
• Where can you buy alternative fuels?
This station in Las Vegas is used to fuel gov’t vehicles and completely solar powered.
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Schoolbus ProjectsSchoolbus Projects• CNG, Diesel, Biodiesel, or…?• Local Air District Grants
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What to do with dirty diesels?
What to do with dirty diesels?
•www.epa.gov/cleanschoolbus• Anti-Idling Initiatives• Re-wire buses
• Retrofit– Catalytic converters for exhaust– Engine conversions to cleaner fuel
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Do Trees Help or Hurt?TC page 77
Do Trees Help or Hurt?TC page 77
Black Walnut
< 1 gram VOC per tree per day
Blue Gum Eucalyptus
72 grams VOC per tree per day
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Grow Your Own Fresh AirGrow Your Own Fresh Air
•Check out www.TED.com•Specifically, search for “Kamal” to see an intriguing video on how to landscape your home or office interior to maximize fresh air.
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Now you will work with a Hydrogen Fuel Cell Car to explore
how hydrogen can be used to create electricity.
Now you will work with a Hydrogen Fuel Cell Car to explore
how hydrogen can be used to create electricity.
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• Whether or not hydrogen becomes the fuel of the future, the chemistry behind it is worth investigating.
• Your car comes with both a battery pack and a solar cell to perform electrolysis to make the hydrogen.
• The car has a smart wheel that makes it turn when it runs into things.
Your New Car!Your New Car!
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•Case Study p31-33 •There is a teacher demonstration
in the Data Log, p44 (TC p45)•It is an effective way to utilize
your hydrogen car with a full class of students
•Be sure your car is assembled and primed first!
Hydrogen Fuel CellsHydrogen Fuel Cells
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A fuel cell consists of two electrodes and an electrolyte. Oxygen passes over the cathode and hydrogen over the anode, generating electricity, water and heat.
–Thanks to Trevor MacDuff at www.nfcep.org
HYDROGEN
OXYGEN
Fuel Cell BasicsFuel Cell Basics
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A reversible fuel cell can accomplish "hydrolysis" through the supply of electricity to the cell and a supply of water to the cathode. This splits water into hydrogen and oxygen.
Making H2Making H2
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H2 Electricity“Reverse Hydrolysis”
H2 Electricity“Reverse Hydrolysis”
HYDROGEN
OXYGEN
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Electrochemical Reactions of Fuel CellElectrochemical Reactions of Fuel Cell
-Anode half reaction (oxidation): 2H2 4H+ + 4e-
-Cathode half reaction (reduction): O2 + 4H+ + 4e- 2H2O
-Overall reaction: 2H2 + O2 2H2O
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There is a CD-ROM with your car with lots of background
information
There is a CD-ROM with your car with lots of background
information
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Implementation WorksheetActivity 10
Hydrogen fuel cell car
Implementation WorksheetActivity 10
Hydrogen fuel cell car
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
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Sustainable electricity is possible
Sustainable electricity is possible
Solar Cell
Wind
Micro Hydro
Electrolyzer
Water Water
FuelCell
Oxygen
Oxygen
Wind
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Part 5: ConclusionsPart 5: Conclusions
Analyze collected and presented data. Make
conclusions about local issues. Plan future
actions.
Analyze collected and presented data. Make
conclusions about local issues. Plan future
actions.
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• Case Study Pages 34-39 are expansions beyond the atmospheric focus of the Clean Air Challenge curriculum
• Topics include transportation issues, goods movement, “well to wheels” and personal choices
Going BeyondGoing Beyond
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Comparing Fuels for Cars, Planes, Ships and Trucks
Comparing Fuels for Cars, Planes, Ships and Trucks
• Energy by volume• Energy by mass• Solubility• Volatility• Vehicle
Modifications• Ozone potential• Particulate
potential
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Drawing ConclusionsDrawing Conclusions
•Activity 13 Which fuels do you favor?– DL p54-55 Chart for comparison– TC p55
•Activity 14 Presenting your case– DL p56– TC p57– CS p34
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Sample Video ClipSample Video Clip
• Internships and Research• Research in the State Pollution Lab• Conversation with Dr Peters re: Ozone• Brainstorming Ozone Reduction• Animation on Ozone Formation• Experiments with Ozone
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Implementation WorksheetActivity 13 & 14
Implementation WorksheetActivity 13 & 14
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
• What unit will I put this in?
• What modifications or support will I need?
• Notes for successful implementation…
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• $900 in material courtesy of our generous sponsors
• Please go to www.myuseofcac.com to take the survey after you have used at least 5 activities of the program
• When you complete the survey, you have fulfilled your obligations to earn the stipend
Now What?Now What?
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• Our sponsors are interested in knowing– That you were able to use the labs in
the same calendar year that you received the training
– How your students reacted to the labs
– Will you continue to use the Clean Air Challenge curriculum?
Why the Follow-Up?Why the Follow-Up?
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• You can go to www.clean-air-challenge.com to get copies of this PowerPoint, other student-centered PowerPoints, various worksheets, read about our exciting adventures abroad, and more.
• Your kit contains a supply list and instructions for refills.
More Follow-UpMore Follow-Up
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Clean Air ChallengeClean Air Challenge
Produced By
Enterprise for Education
Santa Monica, California
Produced By
Enterprise for Education
Santa Monica, California
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