Which of the following is not considered a form of renewable energy
nuclear
biomass
tidal flow
biofuels
sunlight

The world's largest energy source is
coal, 41% of the world's energy use.
nuclear energy, 52% of the world's energy use.
hydropower, 31% of the world's energy use.
geothermal, 45% of the world's energy use.
oil, 33% of the world's energy use.

Which of the following is not an energy source?
oil
electricity
wind
the sun
biomass

Which is the cleanest burning form of coal?
Anthrocite
Bituminous
Lignite
Peat
Icandescent

According to Howstuffworks.com, how far can a typical bicyclist travel using the same amount of energy as is contained in one gallon of gasoline.
38 miles
97 miles
203 miles
597 miles
912 miles

With about 4% of the world's population, the U.S. consumes about how much of the world's energy?
2%
4%
10%
20%
50%

According to the U.S. Department of Engergy, how much of U.S. energy was produced from renewable sources in 2009?
4.7%
10.6%
23.2%
32.4%
51%

The world's proven oil reserves have been estimated at 1.4 trillion barrels. Typical estimates place world consumption of oil at about 80 million barrels per day. At this current rate of consumption, how long before these reserves will be depleted? (No calculator allowed!)
14 years
48 years
85 years
143 years
278 years

EROEI is the ratio of energy used to extract an energy source versus the amount of energy you get out of it. According to a report prepared for the state of Connecticut in 2007, the EROEI for oil has gone down from about 100 to 1 to about 15 to 1 for oil in the U.S. What does this report give as the EROEI for tar sands?
25 to 1
13 to 1
9 to 1
3 to 1
1.3 to 1

According to the same report cited in the previous question, what is the EROIE of ethanol?
25 to 1
13 to 1
9 to 1
3 to 1
1.3 to 1