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Week 6: Geological
Timeline
Monday
Warmup: What is the geologic time
scale?
LT: I can explain how Earth’s
geological history is divided in the
geologic time scale.
Review:
Geologic
Time
Scale
Earth is very old!
- Estimated that earth is at least
4.5 billion years old
- It would take a long amount of
time to categorize earth’s history
into days, months, or years...we
needed a better way.
- Scientists developed a way to
categorize and explain earth’s
history... GEOLOGICAL TIME
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