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The process that occurs when physical forces break into smaller pieces without changing the rock's chemical composition is called..... |
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What is the weathering process involving the constant freezing and thawing of water? |
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What are the processes of mechanical weathering? |
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Definition
Frost wedging, unloading, biological activity |
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When water freezes, its volume..... |
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Definition
Its volume expands by about 9%, exerting a tremendous outward force. This force is great enough to burst water pipes during the winter. |
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Which of the following is the result of chemical weathering? |
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Definition
A rock that has been changed into one or more new compunds |
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What kind of weathering would cause the writing on a marble gravestone to become harder and harder to read over time? |
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A soil's texture is determined by.... |
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Definition
You use categories of clay, silt, and in the soil |
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The main source of organic matter in soil is..... |
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In figure 5-2, what is the layer labeled Y composed of? |
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A soil that is characteristic of the humid eastern United States is..... |
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A soil associated with the hot and wet tropics is.... |
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Which of the following human activities has caused an increase in soil erosion? |
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Definition
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The process responsible for moving material down-slope under the influence of gravity is called.... |
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What is the force behind mass movements? |
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What is the slowest type of mass movement? |
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What is responsible for the formation of exfoliation domes? |
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Definition
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The gradual rounding of the corners and edges of angular blocks of rock is called.... |
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Definition
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The process called....... involves physical forces that break rock into smaller pieces. |
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Definition
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In the process of......, water freezes and expands, enlarging cracks in rocks. |
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Definition
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A large pile of debris that forms at the base of a slope is called..... |
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The most important agent of chemical weathering is..... |
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The layer of rock and mineral fragments produced by weathering and covering nearly all of Earth's land surface, is called..... |
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Human activities that remove vegetation have resulted in a(n)..... in soil erosion. |
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Definition
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The force that drives mass movements is.... |
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List three factors that affect the rate of weathering. |
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Definition
Mechanical weathering, rock characteristics, and climate |
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Term
How are soils classified based on texture? |
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Definition
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Term
What are the three processes that breaks rocks into smaller pieces during mechanical weathering? |
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Definition
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Use Figure 5-1 to determine what a soil is called if it has 20 percent clay, 60 percent silt, and 20 percent sand. |
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In a well-developed soil profile, which horizon is the uppermost layer? |
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In figure 5-2, what is the layer labeled X? |
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