Today we discussed the concept of geologic time--time measured in major changes in the Earth's history.
We read about the 4 eons, then created mnemonics to remember their names. We also used mnemonics to remember the eras in the Phanerozoic eon. See pages 73-77 if you missed today's class.
We finished up by watching a brainpop movie on geologic time, and another on radiometric dating.
Don't forget--test on chapter 3 next class!
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