Name _________________________________________________________ Period ________________

**
How to Calculate Your Carbon Footprint**

**
Human Connections to the Carbon Cycle**

You will need to figure out your **carbon footprint** or
how much carbon dioxide you add to the atmosphere. This worksheet must be done
as soon as possible because some of these steps will take several weeks to get
the information back to you. You may also need your parents to help you with
some of these steps!

__TRASH__

Hint: A typical kitchen size
trash can is **13 gallons** or a typical trash can contains **32 gallons.**

1. How many gallons of trash does your family go through each week? _______________________

2. Once you
have the gallons of trash, multiply that number by 101.92 as this is the pounds
of CO_{2} __per gallon__ of trash

3.
________________ (# of gallons) X 101.92 = ____________________ lbs CO_{2
}

__ELECTRIC & GAS__

Call your electric and gas companies and ask them for a 1 - 2 year history of your usage. You should get it in a few days. Or use the last few statements to get an annual estimate or go to your account online. Electric Companies: Duke Energy 800-521-2232 or IPL 317-261-8222. Gas Companies: Vectren 800-227-1376 or Citizens 317-924-3311 or go to citizensgas.com, account information, Bill analyzer to get information.

1.
Electric: What is your average Household **kWh** usage per year?
________________________

2.
__________________ (kWh per year) X 1.4 lbs CO_{2} per kWh =
_______________ lbs CO_{2}

Your account will information will either be in Therms or CCF. If your gas is measured in a CCF (cubic foot), then look on your bill and find the BTU factor. The CCF X the BTU factor = Therms.

CCF __________ X __________ BTU = _____________ Therms. (you may not have to do this!)

3.
What is your average Therms of Natural **Gas** used per year?
______________________

4.
__________________ (Therms / year) X 11.7 lbs CO_{2 }per Therm of NG =
_____________ lbs CO_{2}

__CARS__

Estimate your weekly/annual mileage and fuel efficiency for each of your cars. Ask your parents or guardian what is the average number of miles they drive per week.

1. Car #1: Average number of miles per week: __________ X 52 = ______________ miles per year

2. Car # 2: Average number of miles per week: _________ X 52 = ______________ miles per year

Next you will need to find the average gas mileage for your cars. Go to the following website and follow the steps below to help determine it. http://www.fueleconomy.gov/

a. Click on
**YOUR MPG (Miles per Gallon)** on the bottom left hand side of the page.

b. Select the Car Make

c. Select the Car Model

d. Find the Correct YEAR your car was made.

e. Write down the first number in RED, which is the average gas mileage of the car.

f. REPEAT this process for the second car.

3. Average MPG for Car # 1: ______________________________________________

4. Average MPG for Car # 2: ______________________________________________

__Car #1:
__

5.
________________ (ave miles driven / year) **
÷**________________
(average MPG) = ____________

Take the total from above and __multiply it by 19__
because there is 19 lbs CO_{2 }used per gal of gas

6. Car # 1 uses
________________________________ lbs CO_{2 }per gal of gas

__Car #2:
__

7.
________________ (ave miles driven / year)**
÷** ________________ (average MPG) = ____________

Take the total from above and __multiply it by 19__
because there is 19 lbs CO_{2 }used per gal of gas

8. Car # 2 uses
________________________________ lbs CO_{2 }per gal of gas

__AIRPLANES:__

You will need to figure out approximately how many airplane
miles you and__ your family__ traveled in the past year. If you need
help go to
http://www.webflyer.com/travel/milemarker/ Simply type in your city of
origin and then your destination. DON’T FORGET you want the

- I traveled _____________________________ TOTAL air miles this past year.

- The rest of my family traveled ________________________ TOTAL air miles this past year.

- ________________ (total miles for everyone)
**X**1 lb CO_{2 }per air mile = __________________ lb CO_{2}

** FINALLY**:

Go to the following website and enter ALL of the above
information, following the directions, in order to get your **CARBON FOOTPRINT!
Only works with Internet Explorer!!**

** **

**
http://www.empowermentinstitute.net/lcd/lcd_files/LCDcalcNet.html **

** **

** Make sure you keep the ZERO’s in the boxes for those
things that you did not have to figure out. For example you did not have to
find gallons of propane or gallons of fuel, so leave the zeros in the box. Tab
through the boxes so it calculates correctly. **PRINT YOUR RESULTS AND STAPLE
TO YOUR PAPER!!**

- I use a total of ____________________________ lbs. of
CO
_{2}per year. (or Total Emissions) - Based on my current lifestyle practices I am at level __________ out of 10.
- My goal is to reduce my annual CO
_{2}emissions by ______________pounds.

__HOW MANY PLANETS DO YOU NEED?__

Go to the following website and take the quiz to find out
how many earth’s you need to support your current lifestyle. **http://www.footprintnetwork.org/en/index.php/GFN/page/calculators/
PRINT YOUR RESULTS AND STAPLE TO YOUR PAPER!!**

How many planets would it take to support you? ___________________________________