Transcription of The Geologic Time Scale
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The Geologic Time Scale
The Geologic time ScaleA history of the earth How old is the earth ? billion years! 4,600,000,000 Divided into eras : Precambrian Paleozoic Mesozoic Cenozoic million years 4 x million years How long was the Paleozoic?544 MYA - 245 MYA How long was the Paleozoic?544 MYA - 245 MYA 299 million years How long was thePrecambrian?299 million years 4,056 million years299 million years Warning:Not to Scale !! To Scale ? To Scale ? How big was a a Sauroposeidon? A Scale timeline To appreciate the times involved in earth s history, we will make two Scale timelines A set distance on the timeline represents the same amount of time ( 1 cm = 1 year) Example: If this line represents your K-12 school career, where would you be now?
Scale Timeline of Earth’s History Part II: Paper Timeline • Today, you will create a scale timeline of Earth’s history on a long sheet of adding machine paper • Scale: 1 inch = 100,000,000 years • 4.6 billion years = 46 inches • E.g. Mr. Inman’s mother was born 1,625,000,000 years ago. Where would this be on the time line?
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