Environmental Footprint Teachable Unit By Elizabeth, Nancy, Mike, Nathan, Fallyn June 16 -18, 2008
Brainstorming Engage How do Humans impact the environment? media 3. guzer. com/pictures/homers_brain. jpg
Brainstorming Engage n What contributes to pollution? http: //en. wikipedia. org/wiki/Image: Snpp. gif
Impact of Car Purchasing Choice teachable tidbit n Learning Objective: ¨ Analyzing the environmental impact of purchasing a car through graphing data http: //girtby. net/images/homer-car. gif
Exploration Activity n Economic comparison of cars ¨ How n would you decide which car to buy? Instructions ¨ Create a line graph for your given data set comparing costs in thousands of dollars (Yaxis) versus time in years (X-axis)
Graphing Data (Example) Assume: Gas Price= $4. 50 per gallon Drive 12, 000 miles per year CAR PURCHAS E PRICE A $16, 000 MILES PER GALLON 23
Graphing Data Assume: Gas Price= $4. 50 per gallon Drive 12, 000 miles per year CAR B PURCHASE PRICE $23, 000 MILES PER GALLON 44 C $10, 000 20 D $7, 000 14
Results Explain Car A (Green Line): C(t)=2355 t+16, 000 Car B (Red Line): C(t)= 1230 t+23, 000 Car C (Blue Line): C(t)=2700 t+10, 000 p r i c e Car D (Yellow Line): C(t)=3855 t+7, 000 Time n Which car would you pick? Why?
A: 2007 Scion t. C C: 2002 Ford Mustang B: 2008 Civic Hybrid D: 1998 Jeep Grand Cherokee
Environmental Statistics Elaborate CARBON EMISSIONS PER YEAR (Kg) Scion t. C Civic Hybrid Mustang Jeep 4538. 8 2485. 6 5220. 0 7457. 1
http: //www. footprintnetwork. org/gfn_sub. php? content=global_footprint
http: //www. footprintnetwork. org/gfn_sub. php? content=global_footprint
Evaluation n Would you change your mind, now accounting for the environmental impact?
Some Interesting Facts… n n Driving your car for 3. 75 miles (assuming 39 mpg) produces 1 kg of CO 2 Flying in a plane for 1. 375 miles produces 1 kg of CO 2 Making 2 plastic bottles or 5 plastic bags produces 1 kg of CO 2 Producing 1 American cheeseburger produces 3. 1 kg of CO 2 Timeforchange. org
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