Here are the responses to your questions based on the information provided:
Question 1: What percentage of Energy used in the US is currently classified as “renewable”?
Response: 9%
Question 2: Tar sands and oil shale are classified as ______ fossil fuels.
Response: non-conventional
Question 3: Which of the following human activities uses the most energy per year?
Response: electrical power
Question 4: Hydroelectric power plants use running ______ to spin a turbine and generate electricity.
Response: water
Question 5: The construction of a dam can permanently change the ecosystem. This results in an artificial _____ called a reservoir.
Response: lake
Question 6: Each wind turbine provides enough energy for about ____ households/year.
Response: 500
Question 7: One of the few drawbacks to Wind Power could be ____ if it is too close to a home or community.
Response: noise
Question 8: Geothermal power uses _____ to spin a turbine, generating electricity.
Response: steam
Question 9: _______ cells capture solar energy and convert it directly to electrical current.
Response: Photovoltaic
Question 10: Which of the following is NOT a challenge of renewable energy?
Response: low impact on landscapes
Question 11: What is the most expensive source of alternative energy?
Response: solar
Question 12: Which area of the United States is best suited for wind power turbines?
Response: the Great Plains
Question 13: The best region to generate solar power in the United States is ____.
Response: desert regions
Question 14: Biofuels, like ____________, are generated from using bacteria or yeast to ferment plant matter.
Response: ethanol
Question 15: Hydrogen fuel cells use a chemical reaction between hydrogen and _______ gas to generate an electric current.
Response: oxygen
Question 16: Which type of light bulb is the most efficient?
Response: LED
Question 17: Distributional _______ are small amounts of money paid by all utility customers to help finance research and development of renewable energy.
Response: surcharges
Question 18: _____ pricing is the practice of some electricity suppliers offering plans (at a premium) that only use renewable sources for electricity.
Response: Green
Question 19: The _____ program is a federal initiative to promote and provide incentives for purchasing more efficient devices and appliances.
Response: energy star
If you have any other questions or need further assistance, feel free to ask!
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