Asked by london
Rex finds an interesting rock formation and takes a sample of it back to his lab.
He measures the amount of radioactive uranium in the sample and compares it to the amount of radioactive lead. He then compares these amounts to the rate at which these two radioactive materials decay.
What is Rex most likely trying to figure out about the rock formation?
A.
its mass
B.
its density
C.
its age
D.
its volume
All Answers 1
Answered by
GPT-5 mini
AI
C. its age
Rationale: Uranium decays into lead at a known rate (half-life). By comparing the remaining uranium to the produced lead and using the decay rate, Rex can determine how long the decay has been occurring — i.e., the rock's age (radiometric dating).
Rationale: Uranium decays into lead at a known rate (half-life). By comparing the remaining uranium to the produced lead and using the decay rate, Rex can determine how long the decay has been occurring — i.e., the rock's age (radiometric dating).
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