The Fiery Depths
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Questions and Answers

Which of the following is the primary source of the Earth's internal heat?

  • Radioactive decay (correct)
  • Tidal forces
  • Solar radiation
  • Volcanic activity

    • What is the main reason why the Earth's internal heat is important?

  • It maintains the Earth's magnetic field
  • It powers plate tectonics (correct)
  • It causes earthquakes
  • It keeps the Earth's core solid

    • How does the Earth's internal heat contribute to the formation of volcanoes?

  • It causes the melting of rocks in the Earth's mantle (correct)
  • It increases the pressure in the Earth's crust
  • It triggers the release of gases from the Earth's core
  • It creates cracks in the Earth's lithosphere

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