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If you started with 500 atoms, how many do you have left after 1 half-life?
younger than the layers around it
80 atoms
3
50 atoms
compares the age to another
250 atoms
trace fossils
law of superposition
Younger rock layers on top and older on the bottom best describes
younger than the layers around it
80 atoms
3
50 atoms
compares the age to another
250 atoms
trace fossils
law of superposition
The relative age of a rock
younger than the layers around it
80 atoms
3
50 atoms
compares the age to another
250 atoms
trace fossils
law of superposition
Foot prints, burrows, and paw prints are an example of
younger than the layers around it
80 atoms
3
50 atoms
compares the age to another
250 atoms
trace fossils
law of superposition
If you ended up with 10 atoms after 3 half-lives, how many did you begin with?
younger than the layers around it
80 atoms
3
50 atoms
compares the age to another
250 atoms
trace fossils
law of superposition
Intrusions are
younger than the layers around it
80 atoms
3
50 atoms
compares the age to another
250 atoms
trace fossils
law of superposition
If you start with 200 atoms, how many remain after 2 half-lives?
younger than the layers around it
80 atoms
3
50 atoms
compares the age to another
250 atoms
trace fossils
law of superposition
If you started with 100 atoms and ended with 12.5 atoms, how many half-lives occured?
younger than the layers around it
80 atoms
3
50 atoms
compares the age to another
250 atoms
trace fossils
law of superposition
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