The Ultimate Fate of the Universe
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Questions and Answers

What is the heat death of the universe?

  • A process that decreases entropy
  • A hypothesis on the ultimate fate of the universe (correct)
  • A confirmed event in the future
  • A temporary state of high thermodynamic free energy

    • In the language of physics, when does the universe reach thermodynamic equilibrium?

  • When the universe is very hot
  • When temperature differences can be exploited to perform work
  • When entropy tends to decrease
  • When the universe reaches thermodynamic equilibrium (correct)

    • What allowed Lord Kelvin to formulate the heat death paradox?

  • The theory of heat as mechanical energy loss in nature (correct)
  • The discovery of thermodynamic equilibrium
  • The discovery of dark energy
  • The disproval of an infinitely old universe

    • What does the second law of thermodynamics state?

    <p>Entropy tends to increase in an isolated system</p> Signup and view all the answers

    What will happen if the curvature of the universe is hyperbolic or flat, or if dark energy is a positive cosmological constant?

    <p>The universe will continue expanding forever, leading to a heat death</p> Signup and view all the answers

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