There are two isotopes of carbon. Carbon-14 is radioactive. Carbon-12 is stable. The half life of Carbon-14 is 5730 years. Carbon-14 is produced naturally in the atmosphere and absorbed by all living things. Therefore, in all living things, the ratio of Carbon-14 to Carbon-12 is the same and remains constant. In a sample of dead organic material, the ratio of Carbon-14 to Carbon-12 is found to be 4/5 of the expected value for living material. The best estimate of the age of the dead organic material is:

There are two isotopes of carbon. Carbon-14 is radioactive. Carbon-12 is stable. The half life of Carbon-14 is 5730 years. Carbon-14 is produced naturally in the atmosphere and absorbed by all living things. Therefore, in all living things, the ratio of Carbon-14 to Carbon-12 is the same and remains constant. In a sample of dead organic material, the ratio of Carbon-14 to Carbon-12 is found to be 4/5 of the expected value for living material. The best estimate of the age of the dead organic material is:

Horizons: Exploring the Universe (MindTap Course List)

14th Edition

ISBN:9781305960961

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter16: Earth And Moon: Bases For Comparative Planetology

Section: Chapter Questions

Problem 4P

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