What is radiation ??
Answers
Answer:
powerful and very dangerous rays that are sent out from certain substances. You cannot see or feel radiation but it can cause serious illness or death
Explanation:
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Answer:
Radiation is energy that comes from a source and travels through space and may be able to penetrate various materials. ... The kinds of radiation are electromagnetic (like light) and particulate (i.e., mass given off with the energy of motion). Gamma radiation and x rays are examples of electromagnetic radiation.
Atoms with unstable nuclei are said to be radioactive. In order to reach stability, these atoms give off, or emit, the excess energy or mass. These emissions are called radiation. The kinds of radiation are electromagnetic (like light) and particulate (i.e., mass given off with the energy of motion). Gamma radiation and x rays are examples of electromagnetic radiation. Gamma radiation originates in the nucleus while x rays come from the electronic part of the atom. Beta and alpha radiation are examples of particulate radiation.
Interestingly, there is a "background" of natural radiation everywhere (ubiquitous) in our environment. Ubiquitous background radiation comes from space (i.e., cosmic rays) and from naturally occurring radioactive materials contained in the earth and in living things.
Radiation Exposure from Various Sources
Source Exposure (U.S. Average)
External Background Radiation 0.54 mSv y-1
Natural K-40 and Other Radioactivity in Body 0.29 mSv y-1
Air Travel Round Trip (NY-LA) 0.05 mSv
Chest X-Ray Effective Dose 0.10 mSv per film
Radon in the Home 2.28 mSv y-1
Man-Made (medical x rays, etc.) 3.14 mSv y-1