NAME: ___________________________________________
DATE: _____________ CLASS: ______________
HOME ENERGY AUDIT: ELECTRICAL PRODUCTION
ANSWER KEY
Directions: Answer
the questions below in the space provided.
1.What is the difference between between renewable
energy and nonrenewable energy?
Renewable energy is from resources that can be made in a short amount of time or are unlikely to run out. Example = Solar Nonrenewable energy is from resources that cannot be made in a short amount of time and can be considered irreplaceable. Example = Coal
2. Identify the type of energy or resource in the follow statements.
__Coal______________ |
a. |
This type of energy is from ancient swamps and
is mined to produce the largest amount of electricity. |
__Biomass___________ |
b. |
This type of resource uses materials that were
living (organic material) and changes it by fermentation, conversion
of gas and bacterial decay. |
__Solar______________ |
c. |
This type of energy uses photovoltaic cells to
produce electricity. |
__Geothermal_________ |
d. |
This type of energy uses the heated water from
the earth's core. |
__Wind______________ |
e. |
This type of energy uses the air in motion from
the uneven heating of the earth to heat or produce electricity. |
__Hydropower________ |
f. |
This type of energy uses the kinetic energy of
the water. |
__Petroleum__________ |
g. |
This type of energy is a fossil fuel and is refined
from crude oil making types of fuel and thousands of products. |
__Propane____________ |
h. |
This type of energy is found by itself, or in
petroleum or coal beds. |
__Nuclear____________ |
i. |
This type of energy involves the nucleus of a
atom. |
3. We think that global warming is a fact, and that carbon dioxide is a major contributor to global warming. For every kilowatt-hour (kWh) of electricity 1.6 pounds of carbon dioxide is produced. If you use less energy, you reduce the amount of carbon dioxide that goes into the atmosphere.
Here are figures for some appliances. Estimate the number of hours each appliance uses
to determine the amount of carbon dioxide produced.
Example Using the Copier:
1265W/1000W/kW x 1.6 lb/kWh x 3 h/day x 365 day/yr
= 2216.28 lb/yr
Answers will vary depending on the estimated number of hours of usage for each appliance.
Appliance |
Voltage |
Current |
Wattage |
CO2 |
Hours/Year |
Annual CO2 |
Copier |
115 V |
11 A |
1265 W |
1.6 lb/kWh |
1095 |
2216.28 lb |
Printer |
120 V |
5.5 A |
660 W |
|
|
|
Microwave |
120 V |
12.5 A |
1500 W |
|
|
|
TV |
120 V |
0.6 A |
75 W |
|
|
|
|
|