What is radioactive kid definition?

What is radioactive kid definition?

Radioactivity is a feature of certain types of matter. All matter is made of chemical elements, and elements are made of atoms. The atoms are changed a little bit each time they release something. They keep giving off particles and energy until they are changed into a stable form. That process is called decay.

What does radioactive mean in simple terms?

1 : the giving off of rays of energy or particles by the breaking apart of atoms of certain elements (as uranium) 2 : the rays or particles that are given off when atoms break apart. radioactivity. noun. ra·​dio·​ac·​tiv·​i·​ty | \ -ak-ˈtiv-ət-ē \

What is radioactive decay in Kid words?

Radioactive decay is a term used to describe the changes in an atom once it has become unstable and begins to lose its particles.

What is radioactivity caused by?

What causes atoms to be radioactive? Atoms found in nature are either stable or unstable. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom’s nucleus may result from an excess of either neutrons or protons.

Is all radiation harmful?

Not all radiation is harmful, and whether or not it is harmful depends on the type of radiation in question and how much (the so-called ‘dose’) you are exposed to. Some types of radiation are known as ‘ionising’.

What is radioactivity used for?

Today, to benefit humankind, radiation is used in medicine, academics, and industry, as well as for generating electricity. In addition, radiation has useful applications in such areas as agriculture, archaeology (carbon dating), space exploration, law enforcement, geology (including mining), and many others.

How do you explain radioactive decay?

Radioactive decay is the spontaneous breakdown of an atomic nucleus resulting in the release of energy and matter from the nucleus. Remember that a radioisotope has unstable nuclei that does not have enough binding energy to hold the nucleus together.

How do you become radioactive?

Neutron activation is the main form of induced radioactivity. It occurs when an atomic nucleus captures one or more free neutrons. This new, heavier isotope may be either stable or unstable (radioactive), depending on the chemical element involved.

Can a person become radioactive?

A person becomes ‘radioactive’ if dust particles containing various radioisotopes land on the person’s skin or garments. This is contamination.

How is radiation good for humans?

Supplementation with low dose irradiation lowered the cancer death rate, reduced infectious diseases, and provided a longer, healthy life in humans (Luckey, 1997b). Premature cancer deaths are caused by insufficient radiation.

What does Radioactive do to your body?

Exposure to very high levels of radiation, such as being close to an atomic blast, can cause acute health effects such as skin burns and acute radiation syndrome (“radiation sickness”). It can also result in long-term health effects such as cancer and cardiovascular disease.

What is radioactivity kids?

Radioactivity for Kids. Radioactivity, also known as radioactive decay, is a process by which a radioactive isotope loses subatomic particles (helium nuclei or electrons) from its nucleus along with usual emission of gamma radiation, and becomes a different element.

What is the meaning of radioactivity?

Radioactivity defined as the spontaneous emission of particles (alpha, beta, neutron) or radiation ( gamma , K capture ), or both at the same time, from the decay of certain nuclides that these particles are, due to an adjustment of their internal structure.

What is radiation for kids?

Kids Encyclopedia Facts. In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes: electromagnetic radiation such as radio waves, visible light, and x-rays. particle radiation such as α, β, and neutron radiation.

What is radiation simple definition?

Radiation : Definition. Radiation is the transfer of energy through waves (electromagnetic radiation) or fast traveling particles (particulate radiation). Radiation can be in the form of heat, sound and light.