Evidence for the big bang (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What are the two major pieces of evidence supporting the Big Bang theory?
What are the two major pieces of evidence supporting the Big Bang theory?
CMB radiation & H/He abundances
How long after the Big Bang did the CMB radiation originate?
How long after the Big Bang did the CMB radiation originate?
Approximately 300,000 years
What type of radiation was the CMB originally before being red-shifted?
What type of radiation was the CMB originally before being red-shifted?
High-energy gamma radiation
What black-body temperature does the CMB correspond to?
What black-body temperature does the CMB correspond to?
K
What key characteristic describes how CMB radiation arrives from space?
What key characteristic describes how CMB radiation arrives from space?
Isotropic (equal from all directions)
What is the magnitude of temperature fluctuations in the CMB detected by COBE?
What is the magnitude of temperature fluctuations in the CMB detected by COBE?
Approximately K
What age of the Universe did WMAP determine?
What age of the Universe did WMAP determine?
billion years
What are the observed relative abundances by mass of elements in the Universe?
What are the observed relative abundances by mass of elements in the Universe?
73% H, 25% He, 2% other
When did primordial nucleosynthesis begin after the Big Bang?
When did primordial nucleosynthesis begin after the Big Bang?
Approximately 100 seconds
How long did primordial nucleosynthesis last in the early Universe?
How long did primordial nucleosynthesis last in the early Universe?
About three minutes