What You Need To Know About Energy
What do you know about energy?
Which of the following is considered an obstacle to cars running on hydrogen fuel cells?
- Cost of fuel cells
- Difficulty storing and transporting hydrogen
- Process of collecting pure hydrogen
- All of the above
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Sorry, that’s incorrect.
All of the reasons mentioned are considered obstacles to producing cars that run on hydrogen fuel cells.
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Sorry, that’s incorrect.
All of the reasons mentioned are considered obstacles to producing cars that run on hydrogen fuel cells.
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Sorry, that’s incorrect.
All of the reasons mentioned are considered obstacles to producing cars that run on hydrogen fuel cells.
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Correct!
All of the reasons mentioned are considered obstacles to producing cars that run on hydrogen fuel cells.
Which of the following is frequently used as a unit of measurement for the energy content of fuels?
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Sorry, that’s incorrect.
The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.
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Correct!
The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.
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Sorry, that’s incorrect.
The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.
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Sorry, that’s incorrect.
The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.
True or false? Fuel cells store energy.
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Sorry, that’s incorrect.
Fuel cells are an efficient way to convert hydrogen to electricity, but the energy is stored in the hydrogen.
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Correct!
Fuel cells are an efficient way to convert hydrogen to electricity, but the energy is stored in the hydrogen.
True or false? Wind energy generation is increasing in the United States.
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Correct!
In the United States, the amount of electricity generated from wind doubled between 2009 and 2014, and now makes up 18% of all renewable energy consumed and almost 2% of total U.S. energy use.
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Sorry, that’s incorrect.
In the United States, the amount of electricity generated from wind doubled between 2009 and 2014, and now makes up 18% of all renewable energy consumed and almost 2% of total U.S. energy use.
How efficient are ordinary commercial solar cell units?
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Sorry, that’s incorrect.
As of 2014, the very best experimental units could convert more than 40% of light energy to electricity; ordinary commercial units are in the range of 5% to 20%.
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Sorry, that’s incorrect.
As of 2014, the very best experimental units could convert more than 40% of light energy to electricity; ordinary commercial units are in the range of 5% to 20%.
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Correct!
As of 2014, the very best experimental units could convert more than 40% of light energy to electricity; ordinary commercial units are in the range of 5% to 20%.
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Sorry, that’s incorrect.
As of 2014, the very best experimental units could convert more than 40% of light energy to electricity; ordinary commercial units are in the range of 5% to 20%.
On average, how much solar radiation reaches each square meter of earth?
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Sorry, that’s incorrect.
On average, even after passing through hundreds of kilometers of air on a clear day, solar radiation reaches Earth with enough energy in a single square meter to run a mid-size desktop computer-if all the sunlight could be captured and converted to electricity.
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Correct!
On average, even after passing through hundreds of kilometers of air on a clear day, solar radiation reaches Earth with enough energy in a single square meter to run a mid-size desktop computer-if all the sunlight could be captured and converted to electricity.
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Sorry, that’s incorrect.
On average, even after passing through hundreds of kilometers of air on a clear day, solar radiation reaches Earth with enough energy in a single square meter to run a mid-size desktop computer-if all the sunlight could be captured and converted to electricity.
Which of the following sources do experts expect will provide us with the “silver bullet” solution to our energy needs?
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Sorry, that’s incorrect.
There is no silver bullet. Tomorrow’s energy, like today’s, will come from a variety of sources.
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Sorry, that’s incorrect.
There is no silver bullet. Tomorrow’s energy, like today’s, will come from a variety of sources.
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Sorry, that’s incorrect.
There is no silver bullet. Tomorrow’s energy, like today’s, will come from a variety of sources.
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Correct!
There is no silver bullet. Tomorrow’s energy, like today’s, will come from a variety of sources.
Which has been growing more, energy to heat homes or energy to cool homes?
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Sorry, that’s incorrect.
Current trends indicate that by 2040 residential buildings will consume up to 28% less energy for heating but about 50% more for cooling.
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Correct!
Current trends indicate that by 2040 residential buildings will consume up to 28% less energy for heating but about 50% more for cooling.
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Sorry, that’s incorrect.
Current trends indicate that by 2040 residential buildings will consume up to 28% less energy for heating but about 50% more for cooling.
In 2014, of the four economic sectors, which used the most energy in the United States?
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Sorry, that’s incorrect.
In 2014, the industrial sector represented 32% of U.S. energy use, while transportation was 28%. Residential and commercial were 22% and 19% respectively.
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Sorry, that’s incorrect.
In 2014, the industrial sector represented 32% of U.S. energy use, while transportation was 28%. Residential and commercial were 22% and 19% respectively.
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Correct!
In 2014, the industrial sector represented 32% of U.S. energy use, while transportation was 28%. Residential and commercial were 22% and 19% respectively.
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Sorry, that’s incorrect.
In 2014, the industrial sector represented 32% of U.S. energy use, while transportation was 28%. Residential and commercial were 22% and 19% respectively.
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