soil
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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| components of soil | rock, clay, sand, silt, and humus
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| 3 layers of soil | topsoil, subsoil, and bedrock
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| What is topsoil? | the upper part of soil. good for growing plants
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| How is soil formed? | by a process called weathering
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| What is weathering? | the breaking down of rock into smaller pieces by water,wind, and plants
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| What is subsoil and bed rock? | layers of soil under the topsoil. not good for growing plants
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| top soil is made by______. | the breaking down of subsoil and bedrock
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| Humus is _. | decayed matter in the topsoil.
It adds nutrients to the soil.
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| Clay | contains tiny particles of soil that holds water well and has some nutrients
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| Sand | is made up of small grains of worn-down rock, has few nutrients, and does not hold water well or
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| Silt | is made up of very small broken pieces of rock. It is small than sand and larger than clay.
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| Conserve means to ___. | use wisely
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| Why should we conserve soil? | It takes thousands of years to form.
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| How do we protect soil? | We plant plants, so the roots will hold the soil in place.
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| Why do we need soil? | It gives us nutrients that plants need to grow.
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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:
cparks3
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