What You Need To Know About Energy
What do you know about energy?
Refrigerators became 70% more efficient between 1972 and 2001, primarily due to regulation. What is a market response to increased efficiency of refrigerators?
- People use their refrigerator more hours in the day.
- People use their refrigerator fewer hours in the day.
- People keep more refrigerators in their house.
-
Sorry, that’s incorrect.
Refrigerators are not likely to be used more or less hours in the day, but people are more likely to have more of them if they cost less to operate.
-
Sorry, that’s incorrect.
Refrigerators are not likely to be used more or less hours in the day, but people are more likely to have more of them if they cost less to operate.
-
Correct!
Refrigerators are not likely to be used more or less hours in the day, but people are more likely to have more of them if they cost less to operate.
Renewable energy (solar, wind, geothermal, hydroelectric, biofuels, waste, and wood) accounted for what percentage of the total energy supply in the United States in 2014?
-
Correct!
In 2014, 10% of our total energy use came from renewable energy sources, such as biomass, wind, solar, and hydropower.
-
Sorry, that’s incorrect.
In 2014, 10% of our total energy use came from renewable energy sources, such as biomass, wind, solar, and hydropower.
-
Sorry, that’s incorrect.
In 2014, 10% of our total energy use came from renewable energy sources, such as biomass, wind, solar, and hydropower.
-
Sorry, that’s incorrect.
In 2014, 10% of our total energy use came from renewable energy sources, such as biomass, wind, solar, and hydropower.
Which of the following is emitted by coal-fired power plants?
-
Sorry, that’s incorrect.
All of the above are emitted from coal-fired power plants and can be harmful to our health and the environment.
-
Sorry, that’s incorrect.
All of the above are emitted from coal-fired power plants and can be harmful to our health and the environment.
-
Sorry, that’s incorrect.
All of the above are emitted from coal-fired power plants and can be harmful to our health and the environment.
-
Sorry, that’s incorrect.
All of the above are emitted from coal-fired power plants and can be harmful to our health and the environment.
-
Correct!
All of the above are emitted from coal-fired power plants and can be harmful to our health and the environment.
What technology was most responsible for increase in lighting efficiency from 45 Im/W in 2001 to 58 Im/W in 2010?
- Increase in efficiency of incandescent light bulbs
- Increase in efficiency of candles
- Increase use of compact fluorescent lights
- Increased use of LED lights
-
Sorry, that’s incorrect.
Increasing market share of compact fluorescents was primarily responsible for the increased lighting efficiency between 2001 and 2010.
-
Sorry, that’s incorrect.
Increasing market share of compact fluorescents was primarily responsible for the increased lighting efficiency between 2001 and 2010.
-
Correct!
Increasing market share of compact fluorescents was primarily responsible for the increased lighting efficiency between 2001 and 2010.
-
Sorry, that’s incorrect.
Increasing market share of compact fluorescents was primarily responsible for the increased lighting efficiency between 2001 and 2010.
What is the largest reservoir of stored solar energy?
-
Sorry, that’s incorrect.
Fossil fuels represent the largest source of stored solar energy, resulting from the transformation of biomass over millions of years into oil, natural gas and coal.
-
Sorry, that’s incorrect.
Fossil fuels represent the largest source of stored solar energy, resulting from the transformation of biomass over millions of years into oil, natural gas and coal.
-
Correct!
Fossil fuels represent the largest source of stored solar energy, resulting from the transformation of biomass over millions of years into oil, natural gas and coal.
In 2014, how much of the world's CO2 is released by the United States?
-
Sorry, that’s incorrect.
The United States emits about 18% of the world’s greenhouse gases, behind only China, which accounts for approximately one-quarter of total global emissions.
-
Correct!
The United States emits about 18% of the world’s greenhouse gases, behind only China, which accounts for approximately one-quarter of total global emissions.
-
Sorry, that’s incorrect.
The United States emits about 18% of the world’s greenhouse gases, behind only China, which accounts for approximately one-quarter of total global emissions.
-
Sorry, that’s incorrect.
The United States emits about 18% of the world’s greenhouse gases, behind only China, which accounts for approximately one-quarter of total global emissions.
A typical incandescent lamp (traditional light bulb) consumes 60 watts of power. How much do each of a compact fluorescent and LED lamp consume, in watts, to produce the same amount of light?
-
Sorry, that’s incorrect.
A typical incandescent lamp (traditional light bulb) that consumes 60 watts of power produces around 800 lumens. A compact fluorescent lamp emits the same amount of light while using only 13 watts. And an LED lamp consumes only 10 watts to give off the same 800 lumens.
-
Sorry, that’s incorrect.
A typical incandescent lamp (traditional light bulb) that consumes 60 watts of power produces around 800 lumens. A compact fluorescent lamp emits the same amount of light while using only 13 watts. And an LED lamp consumes only 10 watts to give off the same 800 lumens.
-
Sorry, that’s incorrect.
A typical incandescent lamp (traditional light bulb) that consumes 60 watts of power produces around 800 lumens. A compact fluorescent lamp emits the same amount of light while using only 13 watts. And an LED lamp consumes only 10 watts to give off the same 800 lumens.
-
Correct!
A typical incandescent lamp (traditional light bulb) that consumes 60 watts of power produces around 800 lumens. A compact fluorescent lamp emits the same amount of light while using only 13 watts. And an LED lamp consumes only 10 watts to give off the same 800 lumens.
If electricity production wastes between 40 and 65% of the primary energy source, why is it used?
- Producing electricity is a way to store energy.
- Electricity production results in no harmful emissions.
- Electricity is a versatile energy carrier.
-
Sorry, that’s incorrect.
Most direct uses of primary energy are limited to generating heat and motion. Electricity, by contrast, is extremely versatile, with a wide range of complex applications.
-
Sorry, that’s incorrect.
Most direct uses of primary energy are limited to generating heat and motion. Electricity, by contrast, is extremely versatile, with a wide range of complex applications.
-
Correct!
Most direct uses of primary energy are limited to generating heat and motion. Electricity, by contrast, is extremely versatile, with a wide range of complex applications.
The United States is home to how many of the world's automobiles?
-
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.
-
Correct!
With less than 5% of the world's population, the United States is home to one-third of the world's automobiles.
-
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.
Thank you for taking our quiz.
Place this badge on your facebook page to show your friends what you know about energy.
Place this badge on your facebook page to show your friends what you know about energy.
OR, get a higher score to unlock a different badge.
Place this badge on your facebook page to show your friends what you know about energy.
OR, get a higher score to unlock a different badge.
Explore Other Topics
Energy Hands-on
Understanding Efficiency
Learn the significance of energy efficiencyThe Promise of Better Lighting
Energy savings through lighting technologyOur Energy System
A visualization of all our energy sourcesEnergy Defined
- America's Energy Future (AEF)
A project undertaken by the National Academy of Sciences, the National Academy of Engineering, and the National Research Council to evaluate current contributions and likely future impacts of existing and new energy technologies. More information about the project, including a roster of committee members, can be found on the AEF website.