Instructional Video

How Do We Know the Age of the Earth?

Curated and Reviewed by Lesson Planet

Some 4.565 billion candles would be needed for a birthday cake for Earth. Young scientists view a video to learn about historical attempts to determine the age of Earth. They see how advances in radioactive dating led to the currently accepted age of 4.565 billion years.

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Instructional Ideas
  • Provide cloze notes for pupils to fill in while watching the video
Classroom Considerations
  • It is advantageous if learners have familiarity with radioactive decay
  • Some basic geology knowledge is beneficial but not necessary
  • This video is hosted on YouTube
Pros
  • Cool graphics engage viewers
  • Interesting and informative video
Cons
  • None