X hits on this document

79 views

0 shares

0 downloads

0 comments

20 / 42

Determining the Starting Amount

There are two types of carbon used in the dating process: C-12 and C-14

C-12 is a stable isotope (it does not decay)

When an organism is alive it has the same ratio   (C-12 to C-14) that is found in the atmosphere (1-trillion to 1)

Same ratio

I’m alive

Different ratio

I’m a fossil

Document info
Document views79
Page views79
Page last viewedSat Dec 03 20:52:27 UTC 2016
Pages42
Paragraphs425
Words1929

Comments