Earth’s Age - How We Know Earth is 4.55 Billion Years Old

Earth’s Age - How We Know Earth is 4.55 Billion Years Old

GEO GIRL via YouTube Direct link

Video Outline

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1 of 12

Video Outline

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Earth’s Age - How We Know Earth is 4.55 Billion Years Old

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  1. 1 Video Outline
  2. 2 What is Absolute Dating?
  3. 3 What is a Radioactive Isotope?
  4. 4 How we use Half Lives to Date Rocks
  5. 5 ? How the Geologic Timescale was made
  6. 6 ? Early Estimates of Earth’s Age
  7. 7 ? After Radioactive Decay Discovery
  8. 8 Oldest Rocks on Earth
  9. 9 How we Know Earth is 4.5 Ga
  10. 10 How the Universe was Dated
  11. 11 Earth History Confirms Earth’s Age
  12. 12 Related Videos & References

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