3rd Grade Rocks and Soil 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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| humus | Material in soil produced by the decomposition of vegetable/animal matter that is needed to fertilize the soil
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| geology | The study of the earth, its history and its rocks
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| minerals | All rocks are made of two or more of these
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| sand | This has large grains with space between grains. It has a rough texture.
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| clay | This has small grains. Water does not move through this easily, and it can be sticky.
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| topsoil | A layer of soil made of decomposed plant and animal material; it is the best soil for growing plants.
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| soil | Loose material that covers much of the earth's surface
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| loam | Soil that contains equal amounts of sand, silt and clay
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| sedimentary | Formed in layers; pressed together over years
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| igneous | Formed when magma cools above or below the ground
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| metamorphic | Formed when rocks are changed by heat or pressure
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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.
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.
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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