SarkariPYQ

SSC CPO 2019 PYQ — Question 84

SSC CPO Tier I - 9th December 2019 - Shift 1 • General Awareness • Q84

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The physics phenomenon when, in polar regions like Alaska and Northern Canada, a splendid display of colours is seen in the sky is called a/an:

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Correct answer: A

Explanation

The correct answer is Option 1 i.e. aurora borealis.

aurora borealis
  • An aurora is referred to as polar lights, northern lights, or southern lights, is a natural light display in the Earth's sky.
  • When charged particles from the sun strike atoms in Earth's atmosphere then electrons move to a higher-energy state. When the electrons fall in a lower energy state by emitting energy which is equal to the difference in higher and lower energy bands. This process creates aurora borealis.
  • In a nutshell, Auroras are the result of disturbances in the magnetosphere caused by solar wind.