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CCI02.02.02.- A Brief History of the Universe: Crash Course Astronomy

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https://www.youtube.com/watch?v=IGCVTSQw7WU
PEDRO ÁLVAREZ JIMÉNEZ
Quiz by PEDRO ÁLVAREZ JIMÉNEZ, updated more than 1 year ago
PEDRO ÁLVAREZ JIMÉNEZ
Created by PEDRO ÁLVAREZ JIMÉNEZ over 6 years ago
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Resource summary

Question 1

Question
At the beginning, the universe was
Image:
3 (binary/octet-stream)
Answer
  • Very cold
  • Very hot
  • Denser

Question 2

Question
About quarks, it is true that
Image:
2 (binary/octet-stream)
Answer
  • They cannot pulled apart
  • They are formed by electrons
  • They form protons and neutrons

Question 3

Question
When the first atoms did appear?
Image:
3 (binary/octet-stream)
Answer
  • 3 minutes after the Big Bang
  • Before the 20 minutes after the Big Bang
  • Atoms have ever existed

Question 4

Question
After recombination
Image:
4 (binary/octet-stream)
Answer
  • Electrons joined to other particles
  • Universe was opaque
  • Photons were free from electrons

Question 5

Question
First stars did appear
Image:
5 (binary/octet-stream)
Answer
  • 400 thousands years after the Big Bang
  • 400 million years after the Big Bang
  • 400 years after the Big Bang
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