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Question

Which phenomenon is responsible for the creation of Aurora Australis?

A
ionization
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B
total internal reflection
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C
refraction
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D
combustion
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Solution

The correct option is A ionization
When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora.

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