Energy Sources and Their Impact
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Questions and Answers

What is the primary source of energy in hydroelectric power?

  • Geothermal heat
  • Solar radiation
  • Wind turbines
  • Moving water, like rivers or tides (correct)

Which element contains 3 million times more energy than an equivalent amount of coal?

  • Uranium-235 (correct)
  • Thorium
  • Carbon
  • Helium

Approximately what percentage of the electricity in the United States is generated from fossil fuels?

  • 50%
  • 75% (correct)
  • 85%
  • 95%

What are the two main by-products of burning fossil fuels and biomass?

<p>Carbon dioxide and water vapor (D)</p> Signup and view all the answers

What is a significant environmental drawback of hydroelectric dams?

<p>Disruption of local ecosystems (B)</p> Signup and view all the answers

Flashcards

What is the source of energy for hydroelectric power?

Hydroelectric power comes from the energy of moving water, such as rivers or tides. The force of the water turns turbines, which generate electricity.

Which element has significantly more energy than coal?

Uranium-235 is a highly radioactive element with a vast amount of energy. It can be used in nuclear power plants to generate electricity.

What percentage of US electricity comes from fossil fuels?

Fossil fuels, including coal, oil, and natural gas, are responsible for a significant portion of the electricity generated in the United States.

What are major byproducts of burning fossil fuels?

Burning fossil fuels and biomass releases carbon dioxide (CO2) as a greenhouse gas, and water vapor is a byproduct of the combustion process.

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What is a drawback of hydroelectric dams?

Hydroelectric dams can disrupt local ecosystems. They alter water flow, affect fish populations, and may lead to habitat loss.

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Study Notes

Hydroelectric Power Energy Source

  • Energy originates from moving water (rivers or tides)

High-Energy Element

  • Uranium-235 has significantly greater energy content than coal.

Fossil Fuel Electrical Production in the US

  • Approximately 85% of US electricity comes from fossil fuels.

Fossil Fuel and Biomass Combustion Byproducts

  • Burning fossil fuels and biomass produces carbon dioxide and water vapor.

Hydroelectric Dam Environmental Disadvantage

  • Disruption of local ecosystems is a significant environmental concern with hydroelectric dams.

Nuclear Reactor Fuel

  • Uranium is the primary fuel in nuclear reactors.

Petroleum Processing

  • Refining petroleum is a process to obtain fuels like diesel and octane.

Nuclear Reaction Result

  • Matter is converted into energy in both nuclear fusion and fission.

Wind Energy Advantages

  • Advantages of wind energy include its clean nature and abundance.

Wind Energy Disadvantages

  • Disadvantages of wind energy include intermittency (depending on wind) and potential visual impact.

Tidal Energy Description

  • Tidal energy captures the energy of rising and falling tides, using the flowing water's movement.
  • It is considered a renewable energy source.

Generator Function

  • A generator converts mechanical energy into electrical energy.

Nuclear Fission vs. Fusion

  • Fission: Heavy nuclei split, releasing energy.
  • Fusion: Light nuclei combine, releasing energy.

Fossil Fuel Renewable Status

  • Fossil fuels are non-renewable resources.

Hydrogen Fuel Cell Byproduct

  • Hydrogen fuel cells primarily produce water as a byproduct.

Geothermal Energy Source

  • Geothermal energy originates from Earth's internal heat.

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Description

This quiz explores various energy sources, including hydroelectric, fossil fuels, wind, and nuclear power. It covers their benefits, environmental impacts, and the technology involved in energy production. Test your knowledge on how different energy sources function and affect our environment.

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