APES Energy Practice Test

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• In the nuclear fuel cycle, which step comes after uranium mining?
• State the first and second laws of thermodynamics as they apply to energy transformations in ecosystems.
• Coal bed methane is a by-product of organic decomposition, and it is retrievable.
• How does carbon pricing influence energy choices, and what mechanisms are commonly used?
• Which statement accurately describes the difference between fission and fusion?
• Which of the following is a disadvantage of hydroelectric power?
• How is the formation of crude oil different from the formation of coal?
• How do geothermal resources depend on rock properties and temperature gradient?
• How is petroleum source rock different from reservoir rock?
• What is the Betz limit, and why is it important for wind energy?
• Because ethanol has lower energy density than gasoline, what is the typical effect on vehicle fuel economy when using ethanol blends?
• What is energy efficiency, and why is it important in energy planning?
• Oil shale is best described as which of the following?
• Which fossil fuel has the lowest carbon per unit energy and is commonly used for heating and electricity?
• What is the fuel in nuclear power plants and how is it used to generate electricity?
• What determines whether an area is suitable for tidal power?
• Why is natural gas considered a better fossil fuel than oil?
• Which statement about the carbon content of coal, oil, and natural gas is true?
• Which statement about EROI interpretation is true?
• What is a key challenge of long-term storage for spent nuclear fuel?
• What regulatory change followed the Chernobyl disaster?
• Why do transmission and distribution (T&D) losses occur, and how are they mitigated?
• What causes wind velocity to increase?
• Which statement correctly describes tidal energy and a typical environmental consideration for it?
• Which option is NOT listed as a mitigation for intermittency?
• Contrast direct solar energy (PV) with concentrated solar power (CSP).
• Which of the following is NOT listed as an advantage of geothermal energy?
• Why do hybrid vehicles reduce fuel consumption compared to conventional internal combustion engine vehicles?
• What is the primary purpose of grid-scale energy storage?
• Which environmental problems are associated with oil production, refining, and transport?
• Which of the following is a renewable energy source?
• Which energy source is described as renewable, clean, with low failure rates and a domestic energy source?
• Which effect is associated with sulfur dioxide emissions?
• What process is used in nuclear reactors to generate power?
• What environmental issue is associated with extracting oil shale?
• What is coal bed methane and what is the advantage to burning it?
• What form of fossil fuel production is the most environmentally damaging?
• Which solar energy approach includes thermal storage?
• Which country exports the most oil to the United States?
• Which of the following is an alternative energy source?
• Which are examples of biofuels?
• How should half-life problems be approached in terms of data organization?
• Externalities are costs or benefits not reflected in market prices. Which of the following best illustrates energy-related externalities?
• Oil shale is best described as which of the following?
• Which statement correctly describes potential energy and kinetic energy?
• What are the main environmental concerns associated with fossil fuel extraction methods (coal mining, oil and gas drilling, fracking)?
• Which is an example of potential energy?
• What is energy return on investment (EROI), and how is it interpreted?
• What is the primary purpose of fuel rods in a nuclear reactor?
• How have nuclear power plants increased the output of electricity since 1990?
• Tar sands are sedimentary rocks impregnated with which substances?
• What is the role of pumped-storage hydroelectricity in grid stability?
• Define capacity factor and explain why renewables often have lower capacity factors than fossil plants.
• Main advantage of photovoltaic cells?
• How does solar energy reaching Earth's surface compare to global energy demand?
• Which of the following is a pro of using ANWR for energy?
• Which unit is used to measure energy?
• Tar sands are sedimentary rocks impregnated with tar oil, asphalt, or bitumen. Which option correctly identifies this characteristic?
• Which statement best describes the end-of-life consideration in life cycle assessment?
• Which statement best describes wind power?
• How does ethanol's energy density compare to gasoline, and what are the implications for vehicle efficiency?
• What is energy diversification and how does it affect energy security?
• Which statement correctly distinguishes active solar heating from passive solar design?
• Which statement describes isotopes?
• Aside from spent fuel, what are some other waste products of nuclear energy?
• What is the role of the reactor in nuclear power generation?
• Which statement best describes the difference between passive and active solar energy?
• Which statement about particulate matter (PM) is true?
• What is grid-scale energy storage and name two technologies used for it?
• Define energy density and name two high-density energy sources.
• What is the rebound effect in energy efficiency improvements?
• What happens to radioactive isotopes over time?
• The radiation from Chernobyl was detected within approximately how many square miles around the site?
• Examples of renewable energy sources include which of the following?
• What is the energy content of Bituminous coal?
• Which statement accurately describes the location of the largest proven oil reserves?
• Which coal class is described as hard, black, and having energy content of about 14,000 BTU?
• Which environmental issue is commonly associated with hydroelectric dams?
• Renewable portfolio standards (RPS) and feed-in tariffs are energy policies. Which statement is correct?
• Which statement correctly distinguishes energy from power?
• Which statement about energy transformations and the second law is correct?
• Why is it important to consider refining processes when evaluating the emissions of fuels?
• What is a biofuel, and what are the environmental impacts of using them?
• Which emissions are primarily responsible for acid rain?
• Which statement about primary oil production is accurate?
• Which energy source provides most of Earth's energy?
• Which statement best describes both tidal energy and wave energy, and notes an environmental consideration for each?
• What is life cycle assessment (LCA) and why is it used in evaluating energy systems?
• Which energy form is generally considered high-grade energy?
• Describe fossil fuels.
• How do nuclear power plants generate electricity, and what are major waste issues?
• Which statement best describes the public view of nuclear energy since the 1970s?
• What does RAD stand for?
• Primary energy is energy contained in natural resources before conversion. Which is an example of a primary energy source?
• Which of the following is a fossil fuel?
• How does high voltage transmission reduce losses?
• Define gross primary productivity (GPP) and net primary productivity (NPP).
• When do tidal power stations generate electricity?
• What is a hydrocarbon and why is it important to fossil fuels?
• How do photovoltaic cells produce electricity from sunlight?
• Which is an example of kinetic energy?
• Which statement is true about sulfur dioxide emission sources?
• Why is nuclear fusion not widely used as an energy source?
• Which statement best defines alternative energy?
• Where are the largest proven reserves of oil?
• Which of the following is NOT typically cited as a main environmental concern associated with large-scale hydropower dams?
• What is the best description of demand response?
• Why has nuclear energy declined in the United States since the 1970s?
• What does BECCS stand for, and what is its potential climate impact?
• What is a potential impact of corn ethanol on agriculture?
• Which environmental concerns are associated with hydraulic fracturing (fracking)?
• Which factor most influences the maximum theoretical solar power at a location?
• What options are being used to reduce the environmental effects of burning coal?
• Which statement describes a potential drawback of electric cars compared to gasoline cars?
• Why is a large-scale increase in hydropower unlikely?
• Why did ANWR make headlines?
• What is energy quality, and how does it differ between high-grade forms and low-grade forms?
• Which statement correctly differentiates crude oil from refined petroleum products in terms of energy use and emissions?
• What is pumped storage in hydroelectric power?
• Which statement best summarizes the second law of thermodynamics?
• Which of the following is NOT listed as a pro of geothermal energy?
• Approximately how deep must sediments be buried to form the source rock for crude oil and natural gas?
• Which pairing correctly matches a mitigation strategy to address intermittency for wind and solar energy?
• Which statement about primary energy is true?
• In the described scenario, what happens to uranium-238 when struck by a neutron?
• How do biofuels like corn ethanol affect net energy yield and agricultural markets?
• What is co-generation?
• Which units are used for energy and for power?
• Cap-and-trade mechanisms as a form of carbon pricing.
• Which sequence correctly represents the steps in the nuclear fuel cycle?
• What is the primary source of biofuels in developing countries?
• What happened at Chernobyl and what has been the impact in the past decades?
• What is the role of subsidies in energy markets and how can they affect innovation?
• What are some concerns of using nuclear power?
• What is the estimated financial impact associated with the Chernobyl disaster according to the material?
• Which statement best describes the limiting factors for expanded photovoltaic use?
• What is the definition of energy payback time (EPBT) in energy technology?
• What are the main geothermal resource types mentioned?
• Define the levelized cost of energy (LCOE) and its use in comparing energy sources.
• What is the role of water in a nuclear power plant?
• Which statement best describes the first law of thermodynamics?
• Which issue is most directly caused by decomposing organic matter in hydropower reservoirs and releases methane?
• How does energy intensity relate to economic development and decarbonization trends?
• What is the solar constant, and what is its approximate value?
• Which is the most abundant fossil fuel?
• Geothermal energy is derived from heat within the Earth. What does it primarily take advantage of to generate energy?
• What are methane hydrates?
• What is the approximate energy transfer efficiency between trophic levels in most ecosystems?
• What is the purpose of enhanced oil production, and how does it differ from primary production?
• Which statement describes typical thermal efficiencies of a conventional coal-fired power plant and a natural gas combined-cycle plant?
• Define insolation and its role in solar energy potential.
• What term describes the method used by some nuclear plants to boost electricity output since 1990?
• What is alternative energy?
• What is gross primary productivity (GPP) and how is it measured?
• Secondary energy results from energy conversion. Which of the following are examples of secondary energy?
• Which process is used to get more oil from reservoirs by injecting fluids such as steam or CO2?
• Which of the following describes an advantage of hydroelectric power?
• What is a fuel cell and how does it work?
• What are the coal classes and what makes them different?
• Explain the difference between capacity factor and actual energy output for a renewable plant.
• Which of the following is a listed advantage of tidal power?
• Which coal class has energy content around 8,300 BTU per pound?
• Which statement about energy storage in renewable systems is true?
• In life cycle assessment, what determines which stages are included in the assessment (e.g., cradle-to-grave, cradle-to-gate)?
• How is high-level nuclear waste being handled presently in the United States?
• What is the function of control rods in a nuclear reactor?
• Which statement describes wind power limitations?
• How is half-life defined?
• Among the three main energy sources used in the USA, which generates the most electricity?
• How does insulation reduce building energy demand, and provide an example?
• What limits the exploitation of oil shale?
• What percentage of solar energy reaches Earth's surface?
• Which energy form is the lowest quality?
• Which statement about social displacement is true in the context of hydropower dam projects?
• How does hydroelectric power generate electricity?
• Which two trends are leading to a rapid increase in energy usage or demand?
• What is solar irradiance, and how does it influence solar energy production?
• Describe the source rock for crude oil and natural gas.