CHM 107LL Computer Day Today we will watch a video, then use the computers to calculate various items in relation to our course. I. Calculate your Carbon Footprint A carbon footprint is a measure of the impact our activities have on the environment, and in particular climate change. It relates to the amount of greenhouse gases produced in our day-to-day lives through burning fossil fuels for electricity, heating and transportation etc. The carbon footprint is a measurement of all greenhouse gases we individually produce and has units of tonnes (or kg) of carbon dioxide equivalent. Here is an example: A carbon footprint is made up of the sum of two parts, the primary footprint (shown by the green slices of the pie chart) and the secondary footprint (shown as the yellow slices). 1. The primary footprint is a measure of our direct emissions of CO2 from the burning of fossil fuels including domestic energy consumption and transportation (e.g. car and plane). We have direct control of these. 2. The secondary footprint is a measure of the indirect CO2 emissions from the whole lifecycle of products we use - those associated with their manufacture and eventual breakdown. To put it very simply – the more we buy the more emissions will be caused on our behalf. Calculate your footprint here - http://www.carbonfootprint.com/calculator.aspx Note that the electricity is the dollars for the year so add all 12 months up (select $ not kW). For the car, put the mileage you drive in one entire year. II. Calculate Your Water Footprint People use lots of water for drinking, cooking and washing, but even more for producing things such as food, paper, cotton clothes, etc. The water footprint is an indicator of water use that looks at both direct and indirect water use of a consumer or producer. The water footprint of an individual, community or business is defined as the total volume of freshwater that is used to produce the goods and services consumed by the individual or community or produced by the business. Calculate your footprint here - http://www.waterfootprint.org/?page=cal/WaterFootprintCalculator To calculate kilograms (kg) you must divide by 2.2. Like if you eat 6 pounds of meat that would be 6 / 2.2 = 2.7 kg meat.CHM 107LL Computer Day Report Name: Your Carbon Footprint: House _______ metric tons of CO2 Flights _______ metric tons of CO2 Car _______ metric tons of CO2 Motorbike _______ metric tons of CO2 Bus & Rail _______ metric tons of CO2 Secondary _______ metric tons of CO2 Total = __________ metric tons of CO2 The average in the USA is 20.4 metric tons of CO2 Your Water Footprint: Your total water footprint is ___________ cubic meter per year. The USA average is 2500. Components of your footprint: Food = __________ cubic meter Domestic = ________ cubic meter Industrial = ________ cubic meter Food broken down: cereal_____, meat_____, vegetable____, fruit____, dairy____, stimulant____, fat____, sugar____, egg____, other____ Click on the “Introduction” of the Water Footprint page and fill in the blanks: 1. It takes _________ liters of water to make 1 kg of wheat bread. 2. It takes _________ liters of water to make 1 liter of cow’s milk. 3. It takes _________ liters of water to make 1 liter of beer. 4. It takes _________ liters of water to make 1 kg of cotton. 5. It takes _________ liters of water to make 1 kg of cane sugar. 6. It takes _________ liters of water to make 1 kg or 2.2 pounds of beef. 7. It takes _________ liters of water to make 1 kg or 2.2 pounds of rice. Follow up Questions. 1. Is your carbon footprint above average? YES NO 2. Is your water footprint above average? YES NO 3. What do you do that creates the most CO2? _______________________________ 4. What do you eat that uses the most water? _______________________________Bill Nye: Climate Change 1. ____________ cores are used to determine the temperatures and air composition for the past hundreds of thousands of years. 2. These cores come from Antarctica and _______________________. 3. This gas has been increasing dramatically since the Industrial Revolution began: _______________. 4. Driving cars, burning fossil fuels, and cutting down __________ are ways humans produce CO2. 5. The US has 5% of the population but emits __________% of the pollution. 6. The ____________________ Protocol has been signed by Russia, Japan, the European Union but not the United States. 7. __________________ expansion will raise sea levels as the ocean waters get warmer. 8. Name two greenhouse gases: ____________________ and __________________________ 9. Name one alternative energy source.