Calculate Earth's Age: Physics Method w/ College AP Physics

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In summary, the conversation discusses the possibility of calculating the age of the Earth using a physics method. It is mentioned that carbon dating of zircons is the most reliable method, as they contain elements such as uranium and thorium. It is also speculated that the Earth's core could act as a nuclear reactor to help determine its age. However, it is noted that radiometric dating, not carbon dating, is the correct term for this method.
  • #1
Skynt
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I'm in a college Physics AP course, and I was wondering:

Is there any way to calculate the age of the Earth using just a easily understandable physics method?
 
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  • #3
tony873004 said:
I believe carbon dating of zircons gives the oldest age.
Carbon-14 has a half-life of 5730 years, so it is not applicable to dating the Earth. Those rocks were never alive and are a lot older than 60,000 years. They do, however, contain uranium and thorium. Those elements can be used to date the rocks.
 
  • #4
really really old
 
  • #5
Speculation: consider the radioactive core as a nuclear reactor to date the Earth's coalescence (not so easy a method).
 
  • #6
I think Tony meant to say radiometric dating, not Carbon-dating, judging from the link.

Claude.
 

1. What is the physics method used to calculate Earth's age?

The physics method used to calculate Earth's age is radiometric dating. This method measures the decay of radioactive elements in rocks and minerals to determine the age of the Earth.

2. How does radiometric dating work?

Radiometric dating works by measuring the ratio of radioactive isotopes to stable isotopes in a sample. The rate of decay of the radioactive isotope is known, so by measuring the ratio, scientists can calculate the age of the sample.

3. What is the accuracy of radiometric dating in determining the age of the Earth?

The accuracy of radiometric dating in determining the age of the Earth depends on the precision of the measurement of the ratio of isotopes. With modern technology, the margin of error for radiometric dating is within 1% of the calculated age.

4. What are some limitations of using radiometric dating to determine the age of the Earth?

One limitation of radiometric dating is that it can only be used on rocks and minerals that contain radioactive elements. This means that not all rocks can be accurately dated. Additionally, contamination or loss of radioactive elements can affect the accuracy of the results.

5. How does the physics method of calculating Earth's age compare to other methods?

The physics method of calculating Earth's age is considered to be one of the most accurate methods available. Other methods, such as geological dating or astronomical dating, can provide estimates but are not as precise as radiometric dating. Combining multiple methods can provide a more accurate and comprehensive understanding of Earth's age.

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