Today I'm talking about the Northen lights.What exactly are the Northen lights?Northen lights stem from when large numbers
Today I'm talking about the Northen lights.What exactly are the Northen lights?Northen lights stem from when large numbers
of electricity charged particles (electrons) at high speed stream in towards the Earth along its magnetic field and collide with
the highest air particals . The air then lights up
rather like what happens in a fluorescent light tube.The resulting colures reflect with
gases we find up there , the most usal yellow-green coming from oxegen.Red colouring is also due to oxegen with a conttribution
from nitrogen. The violet we see often at the lower edge of the aurora is due to nitrogen,as most blue colouring.The
charge particals originate from the sun,and it is the weather conditions on the sun that decide whether or not we will se the aurora.
Particals can stream out from the sun and some are captured by the Earth's magnetic field and find their way to the polar regions.
On the way they travel out into the night side of the Earth and gain extra energy-we will lack understanding of exactly what happens out
there!
by Jochebed