[DOC] [TLE] Absolute dating - Wikipedia [PAR] One of the most widely used is potassium-argon dating (K-Ar dating). Potassium-40 is a radioactive isotope of potassium that decays into argon-40. The half-life of potassium-40 is 1.3 billion years, far longer than that of carbon-14, allowing much older samples to be dated. [DOC] [TLE] Radiometric dating - Wikipedia [PAR] Radiometric dating or radioactive dating is a technique used to date materials 
such as rocks or ... Among the best-known techniques are radiocarbon dating, 
potassium-argon dating and uranium-lead dating. ... Additionally, elements may 
exist in different isotopes, with each isotope of an element differing in the number 
of... [DOC] [TLE] Dating Techniques facts, information, pictures | Encyclopedia.com ... [PAR] As the rocks cool, argon-40 (40Ar) begins to accumulate. Argon-40 is formed in the rocks by the radioactive decay of potassium-40 (40K). ... Radiocarbon (14C) is a radioactive form of the element carbon . It decays spontaneously into nitrogen-14 (14N). [DOC] [TLE] Carbon-14, Radiometric Dating - CSI - Creation Studies Institute [PAR] Carbon dating is used to determine the age of biological artifacts. ... technique 
will not work on older fossils (like those of the dinosaurs alleged to be millions of 
years old). ... Carbon-14 is a radioactive isotope of carbon. ... Potassium-40 found 
in your body at all times; half-life = 1.3 billion years; Uranium-235; half-life = 704... [DOC] [TLE] Radioactive Dating [PAR] The technique of comparing the abundance ratio of a radioactive isotope to a 
reference isotope to determine the age of a material is called radioactive dating. 
... Other methods of dating are used for non-living things. ... dating, developed in 
1966, measures the amount of 40Ar arising from the 40K decay and is compared 
to... [DOC] [TLE] Multiple Choice Questions [PAR] Which of the following could be used to tell if a rock layer was right side up or up 
side ... Which of the following radioactive isotopes is most useful for dating a very 
... archaeological dating ... Argon-40 is the daughter isotope of potassium-40 [DOC] [TLE] Showing Their Age | History | Smithsonian [PAR] Dating the Fossils and Artifacts that Mark the Great Human Migration. ... 
Radiocarbon dating works well for some archaeological finds, but it has 
limitations: it can be used to date only organic materials less than about 60,000 ... 
One of these radioisotopes is potassium-40, which is found in volcanic rock. ... 
Like this article? [DOC] [TLE] Radioactive dating - Australian Museum [PAR] Oct 6, 2009 ... Radioactive dating is a method of dating rocks and minerals using radioactive 
isotopes. ... Many different radioactive isotopes and techniques are used for 
dating. ... This is a common dating method mainly used by archaeologists, as it 
can only ... The dual decay of potassium (K) to 40Ar (argon) and 40Ca... [DOC] [TLE] Radiometric Dating: Methods, Uses & the Significance of Half-Life ... [PAR] Radiometric dating is used to estimate the age of rocks and other objects based 
on the fixed decay rate of radioactive isotopes. ... different dating methods, such 
as uranium-lead dating and radiocarbon dating, in this video lesson. ... because 
we know that potassium-40 decays into argon-40 with a half-life of 1.3 billion 
years. [DOC] [TLE] The various dating techniques available to archaeologists [PAR] A modern archaeologist has almost half a dozen natural dating techniques that 
she .... used on any object if the original amount of radioactive isotope, the 
current amount ... Based on the presence of potassium-40, which is abundant in 
micas,... [DOC] [TLE] Absolute dating | Sciencelearn Hub [PAR] May 20, 2011 ... For example, the decay of potassium-40 to argon-40 is used to date rocks ... 
Radiocarbon dating measures radioactive isotopes in once-living... [DOC] [TLE] The Record of Time: Chronometric Techniques: Part II [PAR] The most commonly used radiometric dating method is radiocarbon click this icon 
... From a chemical standpoint, all of these isotopes of carbon behave exactly the 
same. .... It is based on the fact that potassium-40 (40K) decays into the gas

Question: Like potassium-40, this radioactive isotope is used in archaeological dating
Answer: Carbon-14