8th Grade Final Study Guide
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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| The average distance from earth to the sun | Astronomical Units
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| The time it takes an object to travel once around the sun | Period of Revolution
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| The time it takes an object to complete one rotation on its axis | Period of Rotation
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| Orbit the sun in the asteroid belt | Asteroids
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| is the process by which atoms form a solid with an orderly, repeating pattern. Some crystals are formed from magma and other are from water. | Crystallization
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| minerals that are valuable because of their appearance | Gemstones
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| is an naturally occurring solid mixture composed of minerals, smaller rock fragments, organic matter, or glass | Rock
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| when lava cools and crystallizes on Earth's surface | Extrusive Rock
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| when magma cools and crystallizes inside Earth | Intrusive Rock
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| the process of laying down sediment in a new location. | Deposition
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| is the extinction of many species on Earth within a short period of time | Mass Extinction
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| connects two continents that were previously separated | Land Bridge
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| a body of water formed when ocean water floods continents | Inland Sea
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| an oxygen poor environment where, over time, plant material changed into coal | Coal Swamp
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| a time when a large proportion of Earth's surface is covered with glaciers | Ice Age
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| large mammals of the Cenozoic era | Mega Mammals
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| the living or once-living parts of an environment | Biotic
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| the non-living parts that the living parts of an environment need to survive. | Abiotic
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| is a geographic area on Earth that contains ecosystems with similar biotic and abiotic features | Biomes
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| the process of one ecological community gradually changing into another | Ecological Succession
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| a stable community that no longer goes through major ecological changes | Climax Community
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| the first species that colonize new or undisturbed land. | Pioneer Species
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| when a freshwater ecosystem changes over time in a natural, predictable process | Aquatic Succession
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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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