Radioactive carbon dating kids
In older stars that have burned most of their hydrogen, leftover helium accumulates.
Each helium nucleus has two protons and two neutrons.
radiation sickness,harmful effect produced on body tissues by exposure to radioactive substances.
The biological action of radiation is not fully understood, but it is believed that a disturbance in cellular activity results from the chemical changes caused by ionization (see.....
It occurs in more different forms than any other element in the periodic table.
The periodic table is a chart that shows how chemical elements are related to each other.
At Three Mile Island and Chernobyl, nuclear power plants released radioactive substances into the atmosphere during nuclear accidents.
And in the aftermath of the March 2011 earthquake and tsunami that struck Japan, a nuclear crisis raised fears about radiation and questions about the safety of nuclear power.
And if the artifact is organic—like wood or bone—researchers can turn to a method called radiocarbon dating.While scientists sometimes conceptualize electrons spinning around an atom's nucleus in a defined shell, they actually fly around the nucleus at various distances; this view of the carbon atom can be seen here in two electron cloud figures (bottom), showing the electrons in a single blob (the so-called s-orbital) and in a two-lobed blob or cloud (the p-orbital). It can link to itself, forming long, resilient chains called polymers.
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