QUESTION

Medium

Science & Technology

Prelims 2012

Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth?

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Explanation

Electrically charged particles from space, such as those from the solar wind or cosmic rays, are indeed potentially harmful to living organisms.

The Earth's magnetic field plays a crucial role in protecting the surface by diverting these charged particles toward its poles. This phenomenon is responsible for the creation of the auroras the Northern and Southern Lights (Aurora Borealis and Aurora Australis, respectively).

When these charged particles are funneled toward the Earth's poles by its magnetic field, they interact with molecules in the Earth's atmosphere, creating the beautiful light displays rather than causing harm to living beings on the surface.

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