WorksheetsPrimary Energy Sources
Total questions: 15
Worksheet time: 9mins
Fossil fuels are nonrenewable resources because they
take millions of years to form
are not re-useable
are in high demand
pollute the air
The original source of energy for fossil fuels comes from the
sun
Earth's crust
geothermal energy
biomass
Pumped storage, tides, and dams are examples of
hydropower
wind energy
geothermal energy
radiant energy
This fossil fuel releases the least amount of air pollution when used to produce electricity.
natural gas
coal
nuclear
oil
What is a concern we have with adding too much CO2 to the atmosphere (due to electricity production and other human activities)?
makes too many clouds
makes the polar ice caps melt
affects our air quality (PM 2.5)
disrupts solar energy
A fuel has a HIGH specific energy but LOW energy density. We can tell that the fuel has . . .
a high density (kg/m3).
a density similar to water.
a low density (kg/m3).
a density similar to uranium.
Although not SI units, a scientist could express specific energy in units of . . .
eV u-1
N kg m-1
W s-1 kg-1
A s C-1
The energy released in burning 2.0 kg of gasoline is
23 MJ
68,000 MJ
92 MJ
17,000 MJ
The volume of natural gas needed to produce 18 MJ of energy is . . .
0.50 m-3
2.0 m-3
3.0 m-3
0.33 m-3
According to this Sankey diagram, what is the largest category of degrade of energy or power in lighting a bulb from burning coal.
[Source: http://www.sankey-diagrams.com/tag/efficiency/ ]
Power Generation
Light bulb
Distribution
Coal
According to this Sankey diagram, what is the percent of useful energy supplied to the home from the power company?
[Source: http://www.sankey-diagrams.com/tag/efficiency/ ]
31.5
1.0
28.0
35.0
Electricity is considered a versatile form of energy for all these reasons EXCEPT . . .
Electricity is easy and efficient to produce from primary sources
Electricity has high efficiency at point of use
Electricity is easy to converted into other forms of energy
Electricity is easy to distribute to the user
Your parents get an electric power bill that says your house used 200 kWh. How many joules of energy did your house use?
7.2 x 108 J
1.8 x 108 J
7.2 x 10-4 J
1.8 x 104 J
