WD00940379
PHYSICAL GEOGRAPHY, THE: GEOLOGIC TIME
Geologic Time refers to the millions or even billions of years in which the processes and forces that shape the earth took place. Learn why and how scientists use this time scale and why it is divided into Eras, Epochs and Periods. Explore how geologists use potassium-argon dating to determine the age of rocks and minerals. Visit Ohio State University's dating lab and see the dating process in action.
DVD
Grades 9-12
25 minutes
2000
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