Podcast
Questions and Answers
What is the primary source of energy for hydroelectric power?
What is the primary source of energy for hydroelectric power?
- Wind movement
- Solar radiation
- Moving water (correct)
- Nuclear reactions
What is a major environmental disadvantage of hydroelectric dams?
What is a major environmental disadvantage of hydroelectric dams?
- Increased soil erosion
- Higher carbon emissions
- Disruption of local ecosystems (correct)
- Reduction of freshwater sources
Which type of energy resource is tidal energy considered?
Which type of energy resource is tidal energy considered?
- Geothermal
- Non-renewable
- Renewable (correct)
- Fossil fuel
Which element is commonly known to be the fuel in a nuclear reactor?
Which element is commonly known to be the fuel in a nuclear reactor?
What are the primary by-products from burning fossil fuels and biomass?
What are the primary by-products from burning fossil fuels and biomass?
What happens to matter in nuclear fusion and fission?
What happens to matter in nuclear fusion and fission?
What is the role of control rods in a nuclear reactor?
What is the role of control rods in a nuclear reactor?
Which type of radiation is capable of causing other substances to become radioactive?
Which type of radiation is capable of causing other substances to become radioactive?
What process is used to obtain various products from petroleum?
What process is used to obtain various products from petroleum?
Which of the following is a disadvantage of using hydrogen fuel cells?
Which of the following is a disadvantage of using hydrogen fuel cells?
What type of energy resource is geothermal energy classified as?
What type of energy resource is geothermal energy classified as?
What element is known to have significantly more energy than the same amount of coal?
What element is known to have significantly more energy than the same amount of coal?
Which of the following is NOT considered a type of biomass?
Which of the following is NOT considered a type of biomass?
What energy transformation occurs in a generator?
What energy transformation occurs in a generator?
What is one characteristic of photochemical smog?
What is one characteristic of photochemical smog?
Which statement regarding charging capacity is true?
Which statement regarding charging capacity is true?
What are the advantages of using wind as an energy resource?
What are the advantages of using wind as an energy resource?
What is tidal energy primarily driven by?
What is tidal energy primarily driven by?
What happens when fossil fuels and biomass are burned?
What happens when fossil fuels and biomass are burned?
What type of nuclear process involves splitting nuclei?
What type of nuclear process involves splitting nuclei?
How long will it take for a sample of thorium-234 to reduce to 12.5g if its half-life is 24 days?
How long will it take for a sample of thorium-234 to reduce to 12.5g if its half-life is 24 days?
Flashcards
Fossil fuel byproducts
Fossil fuel byproducts
Burning fossil fuels and biomass create carbon dioxide and water vapor.
Nuclear Fusion vs. Fission
Nuclear Fusion vs. Fission
Nuclear fusion combines atoms, releasing energy. Nuclear fission splits atoms, also releasing energy.
Tidal Energy
Tidal Energy
Tidal energy harnesses the movement of water caused by gravitational forces between Earth, its moon, and the sun. It's a renewable energy source.
Solar Energy Devices
Solar Energy Devices
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Hydroelectric Power
Hydroelectric Power
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Control Rods
Control Rods
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Photochemical Smog
Photochemical Smog
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Carrying Capacity
Carrying Capacity
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Fractional Distillation
Fractional Distillation
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Renewable Energy
Renewable Energy
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Hydrogen Fuel Cells
Hydrogen Fuel Cells
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Geothermal Energy
Geothermal Energy
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Nuclear Energy
Nuclear Energy
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Nuclear Fission
Nuclear Fission
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Nuclear Fusion
Nuclear Fusion
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Radioactive Half-Life
Radioactive Half-Life
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Photovoltaic Cells
Photovoltaic Cells
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Gamma Radiation
Gamma Radiation
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Study Notes
Energy Sources and Processes
- Hydroelectric power derives energy from moving water (rivers or tides).
- In 2025, the global human population is predicted to be 8 billion.
- Nuclear reactors produce steam to power turbines, using thermal energy from the reactor.
- Burning fossil fuels and biomass produces carbon dioxide and water vapor as byproducts.
- Fossil fuels originate from decayed plants and animals.
- Uranium is a common fuel in nuclear reactors.
- Nuclear fusion and fission involve changes in matter, transforming it into energy.
- Hydroelectric dams can disrupt local ecosystems.
- Tidal energy results from the gravitational forces between Earth, its Moon, and the Sun.
- Solar panels and photovoltaic cells use solar (radiant) energy to produce electricity.
- Control rods regulate nuclear reactions.
- Species populations are limited by carrying capacity (resources).
- Photochemical smog is formed from sunlight reacting with pollutants.
- Wind power is a renewable and clean resource, impacting wildlife.
- Environmental disadvantages of hydroelectric dams include ecosystem disruptions.
Energy Conversions
- Generators convert mechanical energy into electrical energy.
- Fission splits atoms; fusion combines them.
Radioactive Decay
- Alpha particles are helium nuclei; beta particles are high-energy electrons; gamma rays are high-energy electromagnetic waves.
- Gamma radiation can make other substances radioactive.
- Neutrons can cause substances to become radioactive.
- Thorium-234 has a half-life of 24 days. If initially 100g of thorium-234 is present, 12.5g will remain after 72 days.
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