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Auroras are lights that appear at Earth’s northern and southern poles. What is the main cause of an aurora?

ASolar wind enters Earth’s atmosphere, and particles interact with ions.
BBubbles of gas are ejected from Earth’s outer crust.
CSunlight reflects off the surface of the Moon during an eclipse.
DThe northern and southern poles are cooler than the rest of Earth.

Verified Answer :

MissPhiladelphia

A full understanding of the physical processes which lead to different types of auroras is still incomplete, but the basic cause involves the interaction of the solar wind with the Earth’s magnetosphere. The varying intensity of the solar wind produces effects of different magnitudes, but includes one or more of the following physical scenarios. so the answer is A

Answer: A) A.  

Solar wind enters Earth’s atmosphere, and particles interact with ions

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