<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Dismiss
Skip Navigation
Our Terms of Use (click here to view) and Privacy Policy (click here to view) have changed. By continuing to use this site, you are agreeing to our new Terms of Use and Privacy Policy.

Age of Earth

Scientists have tried to determine Earth's age in various ways over time; we now know that Earth is about 4.6 billion years old.

Atoms Practice
%
Progress
Practice
Progress
%
Practice Now
Age of Earth Practice
By CK-12
SCI.ESC.716
Please wait...
Please wait...