Origin of the Universe

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Questions and Answers

According to the Big Bang Theory, what happened as space expanded?

  • The universe remained constant
  • The universe contracted
  • The universe cooled and matter formed (correct)
  • The universe expanded rapidly

What was the composition of the universe one second after the Big Bang?

  • Only electrons and protons
  • Only photons and neutrinos
  • Only neutrons and protons
  • Neutrons, protons, electrons, anti-electrons, photons, and neutrinos (correct)

What process led to the birth of light elements during the first three minutes of the universe?

  • Radioactive decay
  • Chemical reactions
  • Nuclear fusion
  • Big Bang nucleosynthesis (correct)

What is assumed to be true in the universe according to the Big Bang Theory?

<p>The universe is constant (C)</p> Signup and view all the answers

What is the main focus of the Big Bang Theory?

<p>Explaining the origin of the universe (B)</p> Signup and view all the answers

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