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| Soil that formed from parent material left by winds, rivers or glaciers. |
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| Rock material from which oil is formed. |
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| Chemical reaction of oxygen with other substances. |
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| A cross section of soil layers that displays all soil horizons. |
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| Loose weathered rock and organic material in which plants with roots can grow. |
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| Soil whose parent material is the local bedrock beneath it. |
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| The weathering away of rock material by grinding action. |
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| Weathering process where decomposing rocks change into different substances. |
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| The breakup of rock due to exposure to processes that occur at or near earths's surface. |
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| Rainwater containing high levels of acid made from pollution. |
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| The peeling of surface layers from exposed bedrock. |
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| Weathering process in which water freezes in cracks of rock wedging it apart. |
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| The breakdown of rock into smaller pieces of the same material and composition. |
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| The ability of soil to grow plants. |
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| The downslope movement of water containing large amounts of clay and silt. |
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| The process by which soil gradually becomes so lacking or depleted in nutrients that it can no longer grow a crop. |
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| The solidified lava filling of the central vent of an extinct volcano. |
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| The measure of the dissolved salts in water. |
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| The downslope transportation of large masses of earth materials by gravity. |
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| Cliff rock fragments pulled loose by weathering and gravity. |
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| The slow movement of soil down a slope. |
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| The downslope movement of a mass of earth materials saturated with water. |
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| A mass movement in which a block of land tilts and moves downhill along a curved surface or slope. |
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| The rapid movement of a mass of bedrock or loose rock sliding down a steep slope. |
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| The removal and transport of materials by natural agents such as wind and running water. |
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| A soil layer with physical and chemical properties that differ from those of adjacent soil layers. |
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| Chemical decomposition in which a compound is split into other compounds by reacting with water. |
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