Chapter Vocabulary for 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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| eon | longest unit of geologic time
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| epoch | subdivision of a period
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| era | subdivision of an eon
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| extinct | dying out
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| geographic isolation | separation of a population of organisms from the rest of its species due to a physical barrier
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| land bridge | stretch of land that connects two continents that were previously separated by water
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| mass extinction | dying out of many species on Earth within a short period of time
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| period | subdivision of an era
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| scale | series of marks or points at known intervals
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| coal swamp | oxygen-poor environment where, over time, plant material changes into coal
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| inland sea | body of water formed when open water flood continents
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| supercontinent | ancient landmass that separated into present-day continents (Pangaea)
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| dinosaur | dominant Mesozoic vertebrate that walked with legs positioned directly below its hips
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| evaporated | changed from liquid to gas
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| plesiosaur | Mesozoic marine reptile with a small head, long neck, and flippers
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| pterosaur | Mesozoic flying reptile with large, bat-like wings
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| glacial groove | gouge made by rocks carried in glaciers
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| hypothesize | to make an assumption about something that is not positively known
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| ice age | time when much of Earth's surface is covered by glaciers
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| mega-mammal | large mammal of the Cenozoic era
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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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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:
Mrs.LundSPA
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