Using your phone's internet browser
go to:  qna.rediff.com
Click and drag this link to
the Home icon in your browser.
Q.

How can estimate the age of earth?

Tags: relationships, entertainment, religion & spirituality
Asked by shrishti, 18 Dec '12 08:00 pm
  Invite a friend  |  
  Save  |  
 Earn 10 points for answering
Answer this question  Earn 10 points for answering    
4000 characters remaining  
  
    
Keep me signed inNew User? Sign up

Answers (4)

 
1.

He fact that all radioisotopes of elements such as potassium, thorium, carbon and uranium decay at a constant rate means they behave like clocks. By examining the ratio of uranium-238 to lead-206, which is non-radioactive, in meteorites scientists determined that the Earth and the rest of the planets are some 4.6 billion years old. The half-life of a radioisotope is the period of time it takes for half the nuclei to decay into an isotope of the same or a different element. The half life of U-238 is 4.6 billion years, and because the ratio of U-238 and Pb-206 is 1:1, the age of the Earth is also 4.6 billion years. No rocks that old can be found on the Earth because of plate tectonics and erosion but a few rocks have been found that are nearly 4 billion years old.
Source: google search
Answered by anil garg, 18 Dec '12 10:43 pm

 
  
Report abuse
Useful
 (0)
Not Useful
 (0)
Your vote on this answer has already been received
2.

Carbon dating
Answered by iqbal seth, 19 Dec '12 07:41 am

 
  
Report abuse
Useful
 (0)
Not Useful
 (0)
Your vote on this answer has already been received
3.

That isn't a complete question, let alone a thought. The Earth's age is estimated at about 4.6 billion years. This is estimated through radiometric dating (dating of half life of igneous rock formations. We also dated rocks from the moon and various meteorites. we also look at emission evidence from the sun.
Answered by Quest, 18 Dec '12 09:49 pm

 
  
Report abuse
Useful
 (0)
Not Useful
 (0)
Your vote on this answer has already been received
4.

That isn't a complete question, let alone a thought. The Earth's age is estimated at about 4.6 billion years. This is estimated through radiometric dating (dating of half life of igneous rock formations. We also dated rocks from the moon and various meteorites. we also look at emission evidence from the sun.
Answered by Ataur Rahman, 18 Dec '12 08:03 pm

 
  
Report abuse
Useful
 (0)
Not Useful
 (0)
Your vote on this answer has already been received

Ask a Question

Get answers from the community

600 characters remaining

Related Answer

Q.
A

According to the latest discoveries and theories, the genus Homo first came on the scene 2.3 to 2.4 million years ago, while the species Homo sapiens ..more

Answered by Rocking Raaj