Geothermal and Solar Energy Overview
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Questions and Answers

What is the average geothermal energy emission of the Earth per square meter?

  • 1/4 W/m 2
  • 1/16 W/m 2 (correct)
  • 1/8 W/m 2
  • 1/2 W/m 2
  • How much electricity can 1 km³ of hot rock cooled by 100°C yield over thirty years?

  • 30 MW (correct)
  • 15 MW
  • 45 MW
  • 60 MW
  • What is the estimated potential energy production of the world over 5 million years?

  • 300,000 EJ
  • 900,000 EJ
  • 600,000 EJ (correct)
  • 1,200,000 EJ
  • In geothermal energy, which regions are likely to emit higher amounts of energy?

    <p>Regions near volcanoes</p> Signup and view all the answers

    What is the time span for the energy yield estimation of hot rock cooling at 100°C?

    <p>30 years</p> Signup and view all the answers

    What factors can influence the geothermal energy output in specific regions?

    <p>Factors include proximity to volcanic activity, hot springs, and fumaroles.</p> Signup and view all the answers

    How does the specific heat of the rock contribute to geothermal energy production?

    <p>The specific heat of the rock determines how much energy can be extracted as it cools.</p> Signup and view all the answers

    Discuss the long-term sustainability of geothermal energy production based on Earth's emission values.

    <p>Geothermal energy is sustainable due to the Earth's continuous emission of heat over time.</p> Signup and view all the answers

    In what ways does the estimation of 600,000 EJ over 5 million years impact policies on energy resource development?

    <p>This estimation supports the promotion of geothermal energy as a long-term energy solution.</p> Signup and view all the answers

    How does geothermal energy compare to other renewable energy sources in terms of efficiency and reliability?

    <p>Geothermal energy is highly efficient and can provide a constant energy supply unlike some intermittent renewables.</p> Signup and view all the answers

    Study Notes

    Geothermal Energy Availability

    • Earth emits heat at an average of 1/16 W/m².
    • Geothermal heat can be significantly higher near volcanoes, hot springs, and fumaroles.
    • One cubic kilometer of hot rock cooled by 100°C can generate 30 MW of electricity for 30 years.
    • Potentially, the world could generate 600,000 EJ of energy over 5 million years.

    Solar Energy Financial and Environmental Benefits

    • Financial benefits of solar energy are mentioned.
    • Environmental benefits of solar energy are mentioned.
    • Net metering is mentioned.
    • Impact of solar energy on property values is mentioned.

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    Description

    This quiz covers the availability and potential of geothermal energy, including its heat emissions and electricity generation capabilities. It also explores the financial and environmental benefits of solar energy, discussing net metering and its impact on property values.

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