Howisitformedattheearthssurface morequestionsonback 20

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Unformatted text preview: ctive isotopes decay at the same rate or half life. 17. As an example, what is the daughter product of radioactive Uranium? 18. What element is common in rock forming minerals, and commonly used as a radioisotope? 19. What is the half‐life of carbon 14? How is it formed at the Earth’s surface? MORE QUESTIONS ON BACK… 20. When is the estimated age boundary between the Cretaceous and Tertiary periods? 21. Provide a brief summary, with examples, of how relative age dating and numeric age dating are used in combination to yield insights into the history of planet Earth. ES202 Video Exercise – Radioactive Dating Video (~13 minutes) I:\Earth Science\geo_videos\ RadioactiveDating.mpeg Watch the video and answer the follo...
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