Energy: Sun & Solar Energy vs. Back Radiation
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What happens to shortwave radiation from the Sun and longwave radiation from the Earth in the Earth's atmosphere?

  • Both shortwave and longwave radiations are absorbed by the Earth's surface
  • Shortwave radiation is absorbed and re-radiated by greenhouse gases in the atmosphere, while longwave radiation is mostly reflected back into space
  • Shortwave radiation is mostly absorbed by the Earth's surface, while longwave radiation is absorbed and re-radiated by greenhouse gases in the atmosphere (correct)
  • Shortwave radiation is absorbed by greenhouse gases, while longwave radiation is reflected by the Earth's surface

    • How does albedo affect the temperature of a surface?

  • Albedo has no effect on surface temperature
  • High albedo surfaces absorb more solar radiation and tend to be cooler, whereas low albedo surfaces reflect more solar radiation and tend to be warmer
  • Both high and low albedo surfaces absorb equal amounts of solar radiation
  • High albedo surfaces reflect more solar radiation and tend to be cooler, whereas low albedo surfaces absorb more solar radiation and tend to be warmer (correct)

    • Why is understanding planetary temperatures crucial for studying climate variations?

  • Because it allows prediction of short-term weather patterns
  • Because it helps determine the greenhouse gas concentrations in the atmosphere
  • Because it helps identify which planets have similar climates to Earth
  • Because it provides insights into the factors influencing climate and temperature changes (correct)

    • What is the primary function of greenhouse gases in the Earth's atmosphere?

    <p>To trap heat in the atmosphere by absorbing and re-radiating thermal radiation</p> Signup and view all the answers

    Which statement accurately describes the role of greenhouse gases in the greenhouse effect?

    <p>Greenhouse gases trap heat in the Earth's atmosphere by absorbing and re-radiating thermal radiation</p> Signup and view all the answers

    How does albedo contribute to the climate system of a planet?

    <p>By reflecting solar radiation back into space, affecting the planet's temperature</p> Signup and view all the answers

    What is the main difference between solar energy and back radiation according to the text?

    <p>Solar energy is incoming radiation from the Sun, while back radiation is outgoing thermal radiation from the Earth.</p> Signup and view all the answers

    How does the Stefan-Boltzmann Law describe the relationship between an object's temperature and the thermal radiation it emits?

    <p>The rate of energy radiation is directly proportional to the fourth power of the object's absolute temperature.</p> Signup and view all the answers

    Which factor determines the wavelength of electromagnetic radiation emitted by an object?

    <p>The object's temperature</p> Signup and view all the answers

    What does Earth's radiation budget represent?

    <p>The balance between incoming solar radiation and outgoing thermal radiation emitted by the Earth</p> Signup and view all the answers

    In electromagnetic radiation, what does different wavelengths correspond to?

    <p>Different amounts of energy</p> Signup and view all the answers

    How does back radiation differ from solar energy in terms of direction?

    <p>Back radiation is outgoing from Earth, while solar energy is incoming from the Sun.</p> Signup and view all the answers

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