Eras of Geologic Time
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Age of the Mammals | Cenozoic
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Age of the Earth | 4.5 Billion Years
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Era when first life appeared on earth | Pre-Cambrian
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Age of the Dinosaurs | Mesozoic
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Era that existed 542-251 million years ago | Paleozoic
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Age of the fish | Paleozoic
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Current era of geologic time | Cenozoic
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Era that occurred 251-65 million years ago. | Mesozoic
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These were responsible for forming the oceans on earth. | Volcanoes
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Era that lasted 4 Billion years | Pre-Cambrian
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
jamesweide
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