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Terrestrial radiation includes radioactive materials naturally found in the earth, including rocks, soil and more. Radiation can enter the body through eating, or breathing it in. Radiation can also enter the body from direct exposure.
Radium-226, Cesium-137, and Strontium-90 are examples of radionuclides. and are the source of terrestrial radiation. Trace amounts of uranium, thorium and their decay products can be found everywhere. Learn more about radioactive decay.
Natural background radiation comes from the following three sources: Cosmic Radiation; Terrestrial Radiation; Internal Radiation; Cosmic Radiation. The sun and stars send a constant stream of cosmic radiation to Earth, much like a steady drizzle of rain.
Terrestrial Radiation. Radioactive material found in: Soil. Water. Vegetation. Radioactive material is also found throughout nature. It is in the soil, water, and vegetation. Low levels of uranium, thorium, and their decay products are found everywhere.
Radiation that originates on Earth is called terrestrial radiation. Primordial radionuclides (radioactive chemi-cals that were present when the Earth formed about 4.5 billion years ago) are found around the globe in igneous and sedimentary rock. From rocks, these radionuclides migrate into soil, water, and even air.
Exposure from terrestrial radiation. The composition of the earth's crust is a major source of natural radiation. The main contributors are natural deposits of uranium, potassium and thorium which, in the process of natural decay, release small amounts of ionizing radiation.
Terrestrial radiation refers to radiation sources in the soil, water, and vegetation. The major isotopes of concern for terrestrial radiation are potassium, uranium, and the decay products of uranium, such as thorium, radium, and radon.
terrestrial radiation Long-wave electromagnetic radiation (wavelengths 4–100 μm, with a peak at 10 μm) from the Earth's surface and atmosphere. See also ATMOSPHERIC ‘WINDOW’; GREENHOUSE EFFECT; RADIATION BUDGET; and RADIATION NIGHT.
The radiation balance of the Earth system is depicted in the Figure 4.18. (Shortwave radiation is colored purple and longwave radiation is in red.) Shortwave radiation from the Sun penetrates through space to the outer edge of the atmosphere unimpeded by the vacuum of outer space.
Radiation, flow of atomic and subatomic particles and of waves, such as those that characterize heat rays, light rays, and X rays. All matter is constantly bombarded with radiation of both types from cosmic and terrestrial sources. This article delineates the properties and behaviour of radiation.