Term
| What is mechanical weathering? |
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Definition
| When physical forces break rock into smaller and smaller pieces without changing the rock's mineral composition. |
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Term
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Definition
| the mechanical breakup of rock caused by the expansion of freezing water in cracks and crevices. |
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Term
| When water freezes, its volume___. |
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Definition
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Term
| Which of the following is NOT associated with mechanical weathering? |
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Definition
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Term
| What is Chemical Weathering? |
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Definition
| The transformation of rock into one or more new compounds. |
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Term
| 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 compounds |
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Term
| The atmosphere gas that forms a lid acid when dissolved in water is____ |
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Definition
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Term
| What would cause the inscription on a marble gravestone to become harder and harder to read over time? |
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Definition
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Term
| What climate does chemical weather favor the most? |
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Definition
| Climates with high temperatures and abundant moisture. |
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Term
| What are the major components of soil? |
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Definition
| Mineral matter or broken down rock,organic matter or humus (which is decayed remains of organisms), water and air |
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Term
| A soil's texture is determined by |
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Definition
| you use the categories of clay, slit and sand in the soil. |
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Term
| The main source of organic matter in soil is |
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Definition
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Term
| 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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Definition
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Term
| What are the proportions of clay, slit, and sand shown at point B in Figure 5-1? |
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Definition
| Clay 20%, slit 40%, Sand 40% |
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Term
| What are the proportions of clay,slit, and sand shown at point C in Figure 5-1? |
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Definition
| Clay 10%, Slit 20%, Sand 70% |
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Term
| A soil associated with the hot and wet tropics is ___. |
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Definition
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Term
| Pedalfer soils contain high amounts of __. |
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Definition
| Iron oxide and aluminum-rich clays. |
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Term
| The process responsible for moving material downslope under the influence of gravity is called ___. |
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Definition
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Term
| What is the force behind mass movements? |
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Definition
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Term
| A mass movement that involves the sudden movement of a block of material along a flat, inclined surface is called a ___. |
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Definition
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Term
| Which of these factors affects the rate of weathering? |
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Definition
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Term
| Why can the removal of vegetation trigger mass movements? |
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Definition
| The plant roots bind the soil and regolith together. |
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Term
| In the process of ____, water freezes and expands, enlarging cracks in rocks. |
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Definition
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Term
| A large pile of debris that forms at the base of a slope is called ___. |
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Definition
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Term
| What is the most important agent of chemical weathering? |
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Definition
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Term
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Definition
| Layer of rock and mineral fragments, which covers nearly all of the Earth's land surface. |
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Term
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Definition
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Term
| What is the content in the soil type Pedocal? |
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Definition
| Abundant calcite or calcuim carbonate and are typically light gray-brown. |
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Term
| What is the location and content of the soil type Laterite? |
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Definition
| Found in hot, wet tropical areas. Iron oxides and aluminum oxides are present. |
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Term
| One of the most dramatic triggers of sudden mass movements is an |
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Definition
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Term
| ______, the slowest type of mass movement, involves the lifting and contracting of soil particles over time. |
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Definition
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Term
| What are the 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
| You use the percentages of clay, slit, and sand. |
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Term
| Explain the three processes that break rocks into smaller pieces during mechanical weathering? |
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Definition
| Frost wedging, unloading, and biological activity |
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