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What You Need To Know About Energy
What do you know about energy?
On average, which is most efficient in coverting heat into electic power?
- Coal boiler power plant
- Natural gas-fired turbine power plant
- Natural gas combined-cycle power plant
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Sorry, that’s incorrect.
On average, a typical coal-burning power plant in 2013 was about 33% efficient in converting heat energy into electrical power. A gas-fired plant was about 42% efficient. And in natural gas combined-cycle power plants—in which waste heat from a natural gas turbine is used to power a steam turbine—generation may be as much as 60% efficient.
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Sorry, that’s incorrect.
On average, a typical coal-burning power plant in 2013 was about 33% efficient in converting heat energy into electrical power. A gas-fired plant was about 42% efficient. And in natural gas combined-cycle power plants—in which waste heat from a natural gas turbine is used to power a steam turbine—generation may be as much as 60% efficient.
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Correct!
On average, a typical coal-burning power plant in 2013 was about 33% efficient in converting heat energy into electrical power. A gas-fired plant was about 42% efficient. And in natural gas combined-cycle power plants—in which waste heat from a natural gas turbine is used to power a steam turbine—generation may be as much as 60% efficient.
Between 1980 and 2012, after fuel economy standards where put in place, which of the following has happened to vehicles?
- Vehicle weight increased
- Vehicle horsepower increased
- Vehicle fuel economy increased
- All of the above
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Sorry, that’s incorrect.
Improved vehicle efficiency has allowed for increases in weight, horsepower and fuel economy.
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Sorry, that’s incorrect.
Improved vehicle efficiency has allowed for increases in weight, horsepower and fuel economy.
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Sorry, that’s incorrect.
Improved vehicle efficiency has allowed for increases in weight, horsepower and fuel economy.
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Correct!
Improved vehicle efficiency has allowed for increases in weight, horsepower and fuel economy.
True or False: Burning coal in electric power plants is a major source of CO2 and other emissions. However, its use doesn't have negative consequences beyond the emissions caused by combustion.
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Sorry, that’s incorrect.
Mining coal disturbs the land and modifies the chemistry of rainwater runoff, which in turn affects stream and river water quality.
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Correct!
Mining coal disturbs the land and modifies the chemistry of rainwater runoff, which in turn affects stream and river water quality.
The consumption of energy worldwide is projected to rise by how much between 2013 and 2040?
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Sorry, that’s incorrect.
U.S. energy consumption is projected to rise 9% by 2040, or 0.3% per year, while global consumption will increase about 50% over the same period
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Sorry, that’s incorrect.
U.S. energy consumption is projected to rise 9% by 2040, or 0.3% per year, while global consumption will increase about 50% over the same period
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Sorry, that’s incorrect.
U.S. energy consumption is projected to rise 9% by 2040, or 0.3% per year, while global consumption will increase about 50% over the same period
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Sorry, that’s incorrect.
U.S. energy consumption is projected to rise 9% by 2040, or 0.3% per year, while global consumption will increase about 50% over the same period
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Correct!
U.S. energy consumption is projected to rise 9% by 2040, or 0.3% per year, while global consumption will increase about 50% over the same period
Which of the following is not a primary energy source?
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Sorry, that’s incorrect.
Electricity is a secondary energy source because it can only be produced from the use of primary energy sources such as coal, natural gas, or nuclear reactions.
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Sorry, that’s incorrect.
Electricity is a secondary energy source because it can only be produced from the use of primary energy sources such as coal, natural gas, or nuclear reactions.
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Correct!
Electricity is a secondary energy source because it can only be produced from the use of primary energy sources such as coal, natural gas, or nuclear reactions.
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Sorry, that’s incorrect.
Electricity is a secondary energy source because it can only be produced from the use of primary energy sources such as coal, natural gas, or nuclear reactions.
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Sorry, that’s incorrect.
Electricity is a secondary energy source because it can only be produced from the use of primary energy sources such as coal, natural gas, or nuclear reactions.
Which of the following energy sources releases carbon dioxide when burned?
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Sorry, that’s incorrect.
Gasoline, diesel fuel, and natural gas all release CO2 when burned.
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Sorry, that’s incorrect.
Gasoline, diesel fuel, and natural gas all release CO2 when burned.
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Sorry, that’s incorrect.
Gasoline, diesel fuel, and natural gas all release CO2 when burned.
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Correct!
Gasoline, diesel fuel, and natural gas all release CO2 when burned.
The United States is home to how many of the world's automobiles?
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Sorry, that’s incorrect.
With less than 5% of the world's population, the United States is home to one-third of the world's automobiles.
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Correct!
With less than 5% of the world's population, the United States is home to one-third of the world's automobiles.
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Sorry, that’s incorrect.
With less than 5% of the world's population, the United States is home to one-third of the world's automobiles.
How many gallons of water are required to hydraulically fracture a well, on average in the U.S.?
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Sorry, that’s incorrect.
The national average is around 1.5 million gallons per well , according to the EPA.
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Sorry, that’s incorrect.
The national average is around 1.5 million gallons per well , according to the EPA.
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Sorry, that’s incorrect.
The national average is around 1.5 million gallons per well , according to the EPA.
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Correct!
The national average is around 1.5 million gallons per well , according to the EPA.
Nuclear power provided what percentage of the total U.S. energy supply in 2013?
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Sorry, that’s incorrect.
19% of our electricity was generated by nuclear fuel in 2013.
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Correct!
19% of our electricity was generated by nuclear fuel in 2013.
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Sorry, that’s incorrect.
19% of our electricity was generated by nuclear fuel in 2013.
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Sorry, that’s incorrect.
19% of our electricity was generated by nuclear fuel in 2013.
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