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What must be true for radioactive dating to be possible with a certain sample?
Wiki User
∙ 15y ago
The sample must contain radioactive elements.
Wiki User
∙ 15y ago
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Why do scientist use radioactive dating?
To figure out how old something is based how long it takes elements in the sample to decay.
What does the half life of a radioisotope correspond to?
The length of time required for half of a sample of radioactive material to decay
What percentage of a radioactive sample remains after 5 half-lives?
3.1 %
To perform Uranium-235 dating on a sample what must be true?
The sample must contain Uranium-235.
Why is a sample of uranium compound found to be losing mass gradually?
The cause is the radioactive decay of uranium isotopes.
What is the significance of a half life of a radioisotope?
It tells what fraction of a radioactive sample remains after a certain length of time.
What is the use of measuring the activity of a radioactive isotope in a sample to determine its age?
radioactive dating
Why do scientist use radioactive dating?
To figure out how old something is based how long it takes elements in the sample to decay.
Why scientists use radioactive dating?
To figure out how old something is based how long it takes elements in the sample to decay.
What happens during radioactive dating?
Radioactive dating is carried out with substances which were formed at some unknown point in the past and contained a known proportion of a radioactive isotope of some element. Radioisotopes decay into other elements at a fixed and known rate. So, if you know how much of the radioactive isotope is still left in the sample, then you can work out how long it would have taken for the rest to have decayed into other elements. That gives the age of the sample.
What is radiometeric dating?
Radiometeric dating is a technique to date geological materials like rocks etc by determining the relative proportions of particular radioactive isotopes present in a sample.
What is the calculation of the age of an object by measuring the proportions of the radioactive isotopes or certain elements?
Carbon-14 dating is the measurement of an object's age by comparing the amount of carbon-14 to the amount of carbon-12 and carbon-13 present in the sample.
Radioactive dating of rock samples is a method?
used to determine the age of rocks and minerals by measuring the abundance of certain radioactive isotopes within them. This method relies on the fact that radioactive isotopes decay at a known rate over time. By measuring the ratio of parent isotopes to daughter isotopes, scientists can calculate how long it has been since the rock or mineral formed.
What does the half life of a radioisotope represent?
It tells what fraction of a radioactive sample remains after a certain length of time.
What are the different types of dating?
By far the most common is radioactive dating which involves checking the amount of a given radioactive isotope in a given sample is left over (and calculating from the half-life [the time it takes for a radioactive element/isotope to decay to half the original amount]). Another one would likely be tree-ring dating which only determines the age of trees by how many rings it has.
Geologists determine the absolute age of rocks using?
Geologists determine the absolute age of rocks using the rates of decay of radioactive elements. Radioactive dating measures the amount of various isotopes present in the sample.
What isotopes is most useful for dating plant and animal remains?
CARBON DATING The most common fossil dating techniques are radiometric dating techniques. Radiometric dating uses knowledge of the decay rates of unstable ( radioactive ) nuclei to determine, by comparison with the proportion of stable nuclei in a fossil sample, the date of the introduction of the radioactive material into the live organism, especially if the isotope was ingested while the organism was alive.
