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5.00 the earth’s history
- 1. The Earth’s History OBJECTIVE •You will be able to explain theories about the earth’s past
- 2. Word Relative dating Definition Estimating the age of a fossil by its place in the layers of the earth (older towards bottom, newer towards the top) Picture
- 3. Word Absolute Dating Definition Determining the age of a fossil by the amount of unstable atoms in it Picture
- 4. Word Definition Geologic Time Scale The calendar scientists use to outline the history of life on Earth Picture
- 5. Word extinct Definition When a species dies out completely and does not reappear Picture
- 6. Word pangaea Definition All the land on earth connected together that eventually broke up into the continents of today Picture
- 7. Word Plate tectonics Definition A theory that the earth’s crust is made of separate pieces that have moved around throughout history Picture
- 8. GEOLOGIC TIME SCALE ERA Precambrian Paleozoic Mesozoic Cenozoic WHEN? What was alive? What happened?