what causes auroras?

Answer 1

The phenomenon known as "aurora borealis", AKA "auroras" or, "The Northern Lights", is causes by charged particles entering Earth's atmosphere.
These charged particles follow the magnetic field lines will surround Earth which is why they tend to show up in the higher Northern and lower southern latitudes since the magnetic field lines extent from the magnetic North pole to the magnetic South pole.

For more info,
http://science.howstuffworks.com/question471.htm
http://www.exploratorium.edu/learning_studio/auroras/happen.html

Answer 2

What Causes Auroras

Answer 3

The electromagnetic Earth field in combination of the sun's light and Earths atmosphere give this result that appears like a curtain or halo and we call it aurora.

You can get more info and many pictures if you visit the EPOD(Earth Picture Of the Day) and go to "search" and try for "aurora"

http://epod.usra.edu/archive.php3

Answer 4

God created them so technically He caused them.

One theory is: Dynamo action with the solar wind flowing past Earth, possibly producing quiet auroral arcs ("directly driven" process). The circuit of the accelerating currents and their connection to the solar wind are uncertain.

Dynamo action involving plasma squeezed earthward by sudden convulsions of the magnetotail ("magnetic substorms"). Substorms tend to occur after prolonged spells (hours) during which the interplanetary magnetic field has an appreciable southward component, leading to a high rate of interconnection between its field lines and those of Earth.

Answer 5

charged particles in the solar wind interact with the earths magnetic field. positive particles are channeled to one pole, negative to the other. As these high energy particle enter the atmosphere at high speed, they collide with atoms of oxygen and nitrogen. This imparts energy to the atoms, and some of the electrons in the atoms jump up to higher states of excitement. when the electrons jump back down to a normal state the energy is given off in the form of a photon (a particle of light)
when this happens to large areas and large numbers of atoms, we see this as an aurora.

It is the same principle that neon lights work on.

Answer 6

aurora borialis or the northern lights are caused by solar particles, that are jettisoned when solar flares erupt, that collide with the earths atmosphere. they are most commonly seen in colder climates.

Answer 7

Plasma

Answer 8

Solar wind interacts with Earth's magnetosphere.

Answer 9

sun's plasma got caught in earth's magnatic field what causes the northern or southern lights

Answer 10

solar flares