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

Explore the fascinating journey of determining Earth's age in this comprehensive 26-minute video. Delve into the concepts of relative and absolute dating, early estimates predating radiometric techniques, and the revolutionary impact of radioactivity discovery on geological dating methods. Learn about the specific rocks used to date Earth and why these methods are highly accurate. Gain insights into the distinction between dating Earth and the universe, and discover how Earth's history corroborates its 4.55-billion-year age. Packed with scientific explanations and historical context, this educational content offers a thorough understanding of how geologists arrived at Earth's current age estimate.

Video Outline
What is Absolute Dating?
What is a Radioactive Isotope?
How we use Half Lives to Date Rocks
? How the Geologic Timescale was made
? Early Estimates of Earth’s Age
? After Radioactive Decay Discovery
Oldest Rocks on Earth
How we Know Earth is 4.5 Ga
How the Universe was Dated
Earth History Confirms Earth’s Age
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