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24 Cards in this Set
- Front
- Back
Uniformitarism |
a |
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Erosion |
a |
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Wearhering |
a |
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Mechanical Weathering |
a |
|
Chemical Weathering |
a |
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Abrasian |
a |
|
Frost Wedging |
a |
|
Oxidation |
When iron combines with water. |
|
Permeable |
Material full of tiny conected air spaces that allow water to seep through. |
|
Soil |
The loose weathered material beaneth the Earth's surface in which plants can grow. |
|
Bedrock |
A solied layer of rock beneath the soil. |
|
Humus |
Decayed organic material in soil. |
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Fertility |
A messure of how well soil supports plant growth. |
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Loam |
Soil that is made up of equal parts of clay, sand, and silt. |
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pH Scale |
A scale that messures soil aciddity. |
|
Soil Horizon |
A layer of soil that differs in color, texture, and composton from the layers above or below it. |
|
Topsoil |
The A horizon. |
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Subsoil |
The B horizon. |
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Decomposers |
Organisms that break the remains of dead organsims into smaller peices and digest them with chemicals. |
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Natural Resource |
Anything in the enviorment that humans use. |
|
Soil Conservation |
Management of soil to limit it's destuction. |
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Crop Rotation |
A farmer plants different crops each year. |
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Countour Plowing |
Farmers plow their feilds along the curve of a slop instead of straight rows. |
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Conservation Plowing |
Dead weeds and stalks from the previous years crop are plowed into the ground to help soil return nutrients, retain mostiure, and hold soil into place. |