"highaltitude" - 1 õppematerjal

Aurora

Aurora Borealis in the north Aurora Australis in the south flows of particles and magnetism mirrorlike images that occur at the same time General information  result of collisions between gaseous particles in the Earth's atmosphere with charged particles released from the sun's atmosphere the earth's magnetic field is weaker at either pole and therefore some particles enter the earth's atmosphere and collide with gas particles Cause highaltitude oxygen: red most common yellowishgreen Appearance nitrogen: blue/purple  northern/southern hemisphere Iceland, Norway, Canada, Alaska, Greenland no light pollution clear nights local midnight Where? When?  Jupiter Saturn On other planets http:// www.youtube.com/watch?v=FcfW  http://www.northernlightscentre.ca/northernlights.html http://www.loc.gov/rr/scitech/mysteries/northernlights.html http://en