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Author Question: Explain how the age of a rock can be determined by radiometric dating. What will be an ideal ... (Read 94 times)

ENagel

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on: Jul 27, 2018
Explain how the age of a rock can be determined by radiometric dating.
 
  What will be an ideal response?

Question 2

Spectroscopy of a star can reveal its temperature, composition, and line-of-sight motion.
 
  Indicate whether the statement is true or false


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SeanoH09

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Reply #1 on: Jul 27, 2018
Answer to Question 1

The minerals in rocks contain small amounts of radioactive isotopes (for example carbon-14 or potassium-40). Over time, these isotopes decay into a different, stable element. By precisely counting the atoms of the original isotopes and decay products within a rock, and knowing the decay time (the half-life) of the radioactive isotope, the age can be determined.

Answer to Question 2

TRUE


ENagel

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

jackie

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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