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Author Question: What percentage of the known naturally occurring isotopes is radioactive? What will be an ideal ... (Read 70 times)

karen

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on: Jul 16, 2018
What percentage of the known naturally occurring isotopes is radioactive?
 
  What will be an ideal response?

Question 2

You need to know the age of a rock collected during a field research project. How do you select which radioactive dating method to use?
 
  What will be an ideal response?


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akpaschal

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Reply #1 on: Jul 16, 2018
Answer to Question 1

70/339  100 = 20.6

Answer to Question 2

First, the method I choose depends on the radioactive elements that could be present in the rock. So, I need to identify the minerals in the rock and then, knowing the composition of the minerals, decide which method is appropriate. Second, I need to make some guess of the age of the rock so that I use a method with an appropriate half life for dating rocks of this age. Table 7.1 provides information on minerals that I can date and the age range of application of each method.


karen

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Reply 2 on: Jul 16, 2018
Wow, this really help

Sarahjh

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Reply 3 on: Yesterday
Excellent

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