Question

Which layer of atmosphere is responsible for aurora formation?

Answer 1

The 'thermosphere' is the layer that is responsible for aurora formation in the atmosphere.

Explanation :

• Atmosphere refers to the layer of gas that surrounds a planet and remains in the gravitational field of that planet.
• Auroras are bright light patterns that appear as curtains, beams, spirals, or dynamic flickers that spread across the sky.
• The thermosphere is the layer that is responsible for the bright light patterns of aurora in the atmosphere.
• The thermosphere is the atmospheric region found from 85 to 500 km altitude, which contains the ionosphere.

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Answer 2

Answer:

The layer of atmosphere responsible for formation of Aurora is the Ionosphere.

Explanation:

• Aurora Borealis occurs in the Earth’s ionosphere. It results from collisions between energetic electrons (sometimes also protons, and even heavier charged particles) and atoms and molecules in the upper atmosphere.

• Interactions between the solar wind and the Earth’s magnetic field may cause electrons (and other particles) to be trapped and accelerated.
• Those particles which do not escape to the magnetic tail are able to enter the atmosphere, close to the north magnetic pole.

• The different colours that can be seen are due to interaction of different atoms or ions

• The ionosphere is where most aurorae borealis is formed and seen with 100-300 km being typical for green and red colour.
• Some energetic particles can penetrate much deeper into the atmosphere about 80 km or lower forming purple coloured streaks across the sky.