Half-life is an estimate of
A) half of the age of a rock's life.
B) the age of a rock's life that is at least 50% likely to be correct.
C) the former size of a rock.
D) the time it takes for half of a rock's isotope atoms to decay.
E) the weight of the isotope in a rock.
Correct Answer:
Verified
Q35: Radiometric decay of carbon-14 would be used
Q36: Uranium-238 decays into thorium-234 and finally into
A)
Q37: Carbon-14 decays and becomes
A) carbon-16.
B) nitrogen-14.
C) carbon-11.
D)
Q38: To determine the age of rocks,the decay
Q39: The half-life of potassium-40 is 1.3 billion
Q41: If a radiometric analysis of an isotope
Q42: The first fossil remains are from this
Q43: The first diverse animal world appeared during
Q44: Where are MOST fossils found?
A) igneous rock
B)
Q45: The half-life of an isotope is 5,000
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