Doing a school project .. cant seem to find what i need .. can you help?
2007-04-24 02:21:20 · 4 answers · asked by Sasha 1 in Science & Mathematics ➔ Astronomy & Space
It took less than a second to find this. are you that lazy ?
http://en.wikipedia.org/wiki/Cosmic_rays
2007-04-24 02:30:26 · answer #1 · answered by Gene 7 · 0⤊ 0⤋
COSMIC REDITION
Cosmic radiation is part of our natural environment, and we are constantly exposed to a certain amount of ionizing radiation. Radiation originating from outer space and the sun is called cosmic radiation and contributes about 13% of the background radiation level on Earth (a greater part is due to radon).
Special features of cosmic radiation
Cosmic radiation is a complex mixture of charged and neutral particles, some of them generated when primary particles from space interact with the earth's atmosphere. This complexity also leads to difficulties in measuring radiation doses from cosmic radiation, but physicists have developed sophisticated approaches to deal with this situation. For the human exposure situation one feature of cosmic radiation is of particular importance: a large percentage of the effective radiation dose from cosmic radiation is due to neutrons of different energy levels. Neutrons are subatomic particles which - when compared to X-rays or Gamma rays - cause more biological damage per dose unit.
2007-04-24 10:16:22 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It is radiation consisting of energetic particles originating beyond the Earth.
2007-04-24 10:18:31 · answer #3 · answered by campbelp2002 7 · 0⤊ 0⤋
Electromagnetic radiation coming from all space material.
2007-04-24 09:32:37 · answer #4 · answered by spir_i_tual 6 · 0⤊ 1⤋