Skoog-Aubrey

**Mr. Skoog, Aubrey Middle School**
Your Task: Use your classroom combined data to answer the questions below to share in how to save the world.

1. What were the biggest vampires you found? The biggest vampires that we found were electronics that have a sleep mode. More specifically, computers and cable boxes. Students found that a desktop computer put to sleep still consumed more than 83 watts of power as opposed to just under 10 watts if shut down. Cable boxes used 57.6 watts when off which was very close to the 75 watts used when on. Laptop computers also shocked students that when they are in sleep mode they use almost the same amount of energy as when they are turned on.

2. How much money could your class save each month by unplugging vampires? We calculated that families could save $15/month or $180/year if they just unplugged the items on our list. Many homes have multiples of these items which would only make the savings greater.

3. How much CO2 would be reduced if your class unplugged the vampires each month? We calculated that the items on our list can contribute 302 pounds of carbon dioxide to our atmosphere monthly or 3,624 pounds annually. As mentioned in the previous question, many families have multiples of these items in their homes which would multiply the amount of carbon dioxide.

4. What was the most surprising thing you found while studying this standby power unit? Students, and I, had no idea that putting a computer in sleep mode still required so much power consumption. Additionally, students had no idea how much carbon dioxide we produce for power consumption.

Attach your classroom spreadsheet used for these calculations.