cosmic rays?

Question

y r cosmic rays more concentrated at poles of the earth and
their intensity is least at the equator?

Answer 1

cosmic rays are mostly atomic nuclei so they are charged, and the magnetic field lines of earth confine the least energetic of them and direct most of them to the poles, especially the north pole. this is the cause of aurorae.

look here:
http://en.wikipedia.org/wiki/Cosmic_ray
http://en.wikipedia.org/wiki/Aurora_%28astronomy%29

Answer 2

Cosmic "rays" are actually not rays, but are charged particles that arrive atearth from all directions. Because they are charged, they interact with the earth's magnetic field. The field is 'thickest' (extends furtherest out) at the lower latitudes including the equator, and 'thinest' at the poles. This has a twofold effect - first by deflecting and/or stopping the particles at the lower latitudes and secondly, those that are deflected are guided towards the poles.

The solar wind could be viewed as local manifestation of cosmic rays which strike earth and can penetrate far enough down into the atmosphere in the polar regions to ionize the upper atmosphere and northern (and southern) lights.

However, you will not be exposed to more cosmic rays on the earth's surface regardless of if you are at the poles or on the equator. Ultra-violet radiation on the other hand is a different matter...

Answer 3

The atmosphere is at its rarest at the poles and is concentrated and more dense at the equator. Thus there isnt enough ozone and similar elements of the atmospohere to absorb or refelct the cosmic radiation

Answer 4

WRONG cosmic rays don't react to any magnetic force or much of any other force. They will penetrate almost anything.when the material is dense enough it will stop it because the cosmic Rays actually hit the atoms.