Geologic Time Scale

Flashcard
•
Science
•
7th - 9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the geologic time scale?
Back
A model scientists use to describe the timing of events and the relationships between those events in Earth’s history.
2.
FLASHCARD QUESTION
Front
Which period are we currently in?
Back
Quaternary
3.
FLASHCARD QUESTION
Front
What time period did dinosaurs, small mammals, and birds exist?
Back
Mesozoic
4.
FLASHCARD QUESTION
Front
List the four eras of the geologic time scale in order from oldest to newest.
Back
Precambrian, Paleozoic, Mesozoic, Cenozoic
5.
FLASHCARD QUESTION
Front
In which time period did jellyfish first appear?
Back
Precambrian
6.
FLASHCARD QUESTION
Front
What is the significance of the Precambrian era?
Back
It is the earliest part of Earth's history, covering about 88% of the geologic time scale.
7.
FLASHCARD QUESTION
Front
What major events occurred during the Paleozoic era?
Back
The emergence of fish, amphibians, and the first land plants.
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