Question

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

A.
Solar wind enters Earth’s atmosphere, and particles interact with ions.
B.
Bubbles of gas are ejected from Earth’s outer crust.
C.
Sunlight reflects off the surface of the Moon during an eclipse.
D.
The northern and southern poles are cooler than the rest of Earth.

Answer 1

What is the main cause of an aurora?

The short answer to how the aurora happens is that energetic electrically charged particles (mostly electrons) accelerate along the magnetic field lines into the upper atmosphere, where they collide with gas atoms, causing the atoms to give off light.

Step-by-step explanation: