In this geologic time worksheet, high schoolers review how fossils were formed and the events that mark the various geological eras and periods. This worksheet has 10 fill in the blank and 9 short answer questions.
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New Review A Brief History of Geologic Time
How do scientists know the history of Earth before humans—or any mammals—existed? An epic "Eons" series video explains the larger history of geologic time. It highlights the eons, eras, periods, epochs, and ages scientists use to divide...
12 mins 6th - 12th Science CCSS: Adaptable