NATURAL ENVIRONMENTAL RADIATION Flashcards
Results in an annual dose of approximately 3 mSv.
NATURAL ENVIRONMENTAL RADIATION
Types of NATURAL ENVIRONMENTAL RADIATION
Cosmic Rays
Terrestrial Radiation
Internally Deposited
Radon
Particulate and electromagnetic radiation emitted by the sun and stars; increases with altitude and latitude.
COSMIC RAYS
Results from deposits of uranium, thorium, and other radionuclides in the Earth.
TERRESTRIAL RADIATION
Mainly potassium-40 (40^K), are natural metabolites.
Carbon 14 (14^C) deposited in trees and fossils.
INTERNALLY – DEPOSITED
An odorless radioactive gas found in soil that can enter your home through cracks in the foundation.
A known human carcinogen and leading cause of lung cancer.
RADON
TYPES OF MAN – MADE RADIATION
Diagnostic X-ray
Nuclear Power Station/ Industrial Sources
Consumer Products
Radioactive Fallout
Results in an annual dose of approximately 3.2 mSv.
MAN – MADE RADIATION
Constitute the largest source of man-made ionizing radiation.
DIAGNOSTIC X-RAYS
The deposition on the surface of the earth of radioactive particles, released into the atmosphere as a result of nuclear explosions and by discharge from nuclear-power and atomic installations.
RADIOACTIVE FALLOUT