How can you tell how old a fossil is?
How do we know the age of the earth?
How to scientists use isotopes to figure out how old things are?
What is a half-life?
What happens when the number of protons and neutrons becomes the same in radioactive materials?
Who was Henri Becquerel?
Who was Willard Libby?
What is a radioactive isotope?
What is the carbon cycle?
What is the Shroud of Turin?
Here are some questions people have asked about this topic.
Click the question to read the answer!
Ask your own question about this topic.
See a Full List of Topics
© 1999-2012 BrainPOP. All rights reserved.
BrainPOP is a business name of FWD Media, Inc. Your use of the site
indicates your agreement to be bound by our
Terms of Use
and
Privacy Policy
.