The Big Bang and Beyond
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Questions and Answers

Which theory describes how the universe expanded from an initial state of high density and temperature?

  • Quantum Mechanics
  • String Theory
  • Theory of Relativity
  • Big Bang Theory (correct)

    • What does cosmic inflation explain?

  • The overall uniformity of the universe (correct)
  • The cosmic microwave background radiation
  • The abundance of light elements
  • The large-scale structure of the universe

    • What observation is compatible with the models of the Big Bang?

  • The speed of galaxies is constant regardless of distance
  • The closer a galaxy is, the faster it is moving away from Earth
  • The farther away a galaxy is, the faster it is moving away from Earth (correct)
  • The speed of galaxies is decreasing with distance

    • What is the flatness problem in cosmology?

    <p>The problem of explaining the overall uniformity of the universe</p> Signup and view all the answers

    What is the main limitation of current physics theories when it comes to modeling the earliest conditions of the Big Bang?

    <p>Lack of a widely accepted theory of quantum gravity</p> Signup and view all the answers

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