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21.1 Vocabulary Quiz. Put your name & class period on your paper. Write 21.1 vocab under your name. Number from 1 – 8. Have a pen/colored pencil to check.
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Put your name & class period on your paper. • Write 21.1 vocab under your name. • Number from 1 – 8. • Have a pen/colored pencil to check.
Each slide will be visible for 30 seconds. Once all slides have cycled through, they will be repeated, remaining visible for 10 seconds each.
NUMBER 1 • to approach the end
NUMBER 2 • time unit in the geological time scale, measured in millions of years to tens of millions of years
NUMBER 3 • longest eon in geologic history of Earth
NUMBER 4 • record of Earth’s history from its origin to the present used to correlate geologic events, environmental changes, and development of life-forms that are preserved in rock
NUMBER 5 • many groups of organisms disappear from the rock record at the same time
NUMBER 6 • third-longest time unit in the geological time scale, measured in tens of millions of years to hundreds of millions of years
NUMBER 7 • longest time unit in the geologic time scale, measured in billions of years
NUMBER 8 • second-longest time unit in the geological time scale, measured in hundreds of millions of years
NUMBER 1 • to approach the end
NUMBER 2 • time unit in the geological time scale, measured in millions of years to tens of millions of years
NUMBER 3 • longest eon in geologic history of Earth
NUMBER 4 • record of Earth’s history from its origin to the present used to correlate geologic events, environmental changes, and development of life-forms that are preserved in rock
NUMBER 5 • many groups of organisms disappear from the rock record at the same time
NUMBER 6 • third-longest time unit in the geological time scale, measured in tens of millions of years to hundreds of millions of years
NUMBER 7 • longest time unit in the geologic time scale, measured in billions of years
NUMBER 8 • second-longest time unit in the geological time scale, measured in hundreds of millions of years
NUMBER 1 decline
NUMBER 2 epoch
NUMBER 3 Precambrian
NUMBER 4 geologic time scale
NUMBER 5 mass extinction
NUMBER 6 period
NUMBER 7 eon
NUMBER 8 era