ESS
Grade-9
Easy
Question
CBR is __________.
- Release of energy in the process of the fusion of hydrogen nuclei in the center of stars.
- Release of energy 380,000 years after the Big Bang
- Release of energy by the Sun.
- Use of energy in the laboratory to sterilize apparatus.
Hint:
The CMB radiation was radiated 13.7 billion years ago, only a few hundred thousand years later the Big Bang, long before stars or galaxies ever existed.
The correct answer is: Release of energy 380,000 years after the Big Bang
The universe started 13.8 billion years ago, and the CBR dates back to about 400,000 years after the Big Bang.
Hence, (B) Release of energy 380,000 years after the Big Bang, is the right answer.
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