Name:__________________Date:____________________
Calculating Household Energy Consumption
1. Use the Gismo to calculate the wattage, number of kWh used, and Cost of
energy for two appliances in each room. Use appliances that make sense with
the times provided!
Bedroom
Appliance 1
used for 25 min each day, all year
Wattage
kWh
Cost
Appliance 2
Used once a week for 1 hour
Wattage
kWh
Cost
Living
Appliance 1
used for 10 hours each day, all year
Wattage
kWh
Cost
Appliance 2
Used once a week for 120 min
Wattage
kWh
Cost
Kitchen
Appliance 1
used for 24 hours each day, all year
Wattage
kWh
Cost
Appliance 2
Used once a week for 5 min
Wattage
kWh
Cost
Laundry
Appliance 1
used for 1.5 hours each day, all year
Wattage
kWh
Cost
Appliance 2
Used once a week for 30 min
Wattage
kWh
Cost
2. Which appliance has the lowest wattage?
Name:__________________Date:____________________
3. If you look at a whole year, which appliance uses the least kWh? (Hint: there
are 52 weeks in one year).
4. Name 2 ways you could reduce the cost spent on energy in each room.
5. Using your knowledge of the different sources of energy (coal, solar, wind,
etc.) why do you think is it important to reduce how much energy we use?