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Why are radioactive substances useful for measuring geologic time?
the same
The disintegration of radioactive substances occurs at a predictable rate.
The disintegration of radioactive materials occurs at a predictable rate.
U238
C14 and N14
composition of the substance
the same as the original specimen's half-life
decay at a predictable rate
The half-life of a radioactive substance is mainly controlled by the
the same
The disintegration of radioactive substances occurs at a predictable rate.
The disintegration of radioactive materials occurs at a predictable rate.
U238
C14 and N14
composition of the substance
the same as the original specimen's half-life
decay at a predictable rate
Which two elements are most useful for the radioactive dating of recent organic remains?
the same
The disintegration of radioactive substances occurs at a predictable rate.
The disintegration of radioactive materials occurs at a predictable rate.
U238
C14 and N14
composition of the substance
the same as the original specimen's half-life
decay at a predictable rate
One similarity between uranium-238 and carbon-14 is that both
the same
The disintegration of radioactive substances occurs at a predictable rate.
The disintegration of radioactive materials occurs at a predictable rate.
U238
C14 and N14
composition of the substance
the same as the original specimen's half-life
decay at a predictable rate
Why are radioactive materials useful for measuring geologic time?
the same
The disintegration of radioactive substances occurs at a predictable rate.
The disintegration of radioactive materials occurs at a predictable rate.
U238
C14 and N14
composition of the substance
the same as the original specimen's half-life
decay at a predictable rate
If a radioactive material were cut into pieces, the half-life of each piece would be
the same
The disintegration of radioactive substances occurs at a predictable rate.
The disintegration of radioactive materials occurs at a predictable rate.
U238
C14 and N14
composition of the substance
the same as the original specimen's half-life
decay at a predictable rate
If an object is cut in eight equal pieces, what happens to its half life?
the same
The disintegration of radioactive substances occurs at a predictable rate.
The disintegration of radioactive materials occurs at a predictable rate.
U238
C14 and N14
composition of the substance
the same as the original specimen's half-life
decay at a predictable rate
Which radioactive isotope disintegrates to lead (Pb206)?
the same
The disintegration of radioactive substances occurs at a predictable rate.
The disintegration of radioactive materials occurs at a predictable rate.
U238
C14 and N14
composition of the substance
the same as the original specimen's half-life
decay at a predictable rate
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