NASA's SOFIA Confirms Water on Sunlit Surface of Moon
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Questions and Answers

What is the main reason for the rise and fall of water levels in a tidal wave or tsunami?

  • Gravitational pull of the Moon and Sun
  • Variation in the Earth's gravitational field
  • Displacement of a huge amount of water due to natural disasters (correct)
  • Changes in the Earth's rotation speed

    • What is the primary challenge in explaining the origin of the Moon?

  • Explaining the Moon's orbit around the Earth
  • Developing a theory that explains the Moon's formation (correct)
  • Accounting for the Moon's iron core
  • Describing the Moon's chemical composition

    • According to the Fission Theory, why does the Moon lack iron?

  • The Moon was formed during a different geological era
  • The Moon formed from the Earth's core
  • Iron was lost during the Moon's orbit around the Earth
  • The Moon formed from the Earth's outer layers, which were depleted of iron (correct)

    • What is a major problem with the Fission Theory?

    <p>The parts of the Earth that broke off would have been along the equator</p> Signup and view all the answers

    What percentage of the Earth's mass is made up of its iron core?

    <p>32%</p> Signup and view all the answers

    What is a requirement for a successful theory of the Moon's origin?

    <p>It must account for the Moon's similarity in chemical composition to the Earth</p> Signup and view all the answers

    What is a characteristic of a tidal wave or tsunami?

    <p>A rise and fall of water levels</p> Signup and view all the answers

    What is not a cause of a tidal wave or tsunami?

    <p>Gravitational pull of the Moon</p> Signup and view all the answers

    What is the relationship between the Earth's iron core and the Moon's lack of iron?

    <p>The Moon lacks iron because it formed from the Earth's outer layers</p> Signup and view all the answers

    What is the primary difference between the Earth and Moon in terms of chemical composition?

    <p>The Earth has a higher iron content</p> Signup and view all the answers

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