Definition for radioactive dating
Carbon, uranium and potassium are just a few examples of elements used in radioactive dating.Each element is made up of atoms, and within each atom is a central particle called a nucleus.The half-life is the amount of time it takes for half of the atoms of a specific isotope to decay.(Remember, isotopes are variations of elements with a different number of neutrons.) The half-life is reliable in dating artifacts because it is not affected by environmental or chemical factors; it does not change.If a scientist were to compute this, s/he would say…two half-lives went by at a rate of 4.5 billion years per half-life; therefore, the sample is approximately 2 times 4.5 billion or 9 billion years old. So you see, Earth scientists are able to use the half-lives of isotopes to date materials back to thousands, millions and even to billions of years old.Within the nucleus, we find neutrons and protons; but for now, let's just focus on the neutrons.
A new, more stable isotope, called the decay or daughter product, takes its place.The object's approximate age can then be figured out using the known rate of decay of the isotope.Radiocarbon dating is one kind of radiometric dating, used for determining the age of organic remains that are less than 50,000 years old.Absolute age is just a fancy way of saying definitive or specific age as opposed to the relative age, which only refers to how old or young a substance is in comparison to something else.To illustrate, let's use the isotope uranium-238, which has a half-life of 4.5 billion years.
measurement of the amount of radioactive material (usually carbon 14) that an object contains; can be used to estimate the age of the object Familiarity information: RADIOACTIVE DATING used as a noun is very rare.