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