| What is mechanical weathering ? |
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| when physical forces break rock into smaller and smaller pieces without changing the rocks mineral composition |
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| when water freezes and expands it enlarges the cracks after many freeze thaw cycles the rocks break into pieces |
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| when water freezes its volume __ |
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| Which of the following is NOT associated with mechanical weathering ? |
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| What is chemical weathering ? |
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| Is the transformation of rock into one or more new compounds |
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| Which of the following is the result of chemical weathering? |
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| a rock that has been changed into one or more new compounds |
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| The atmospheric gas that forms a mild acid when dissolved in water is ? |
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| What would cause the inscription on a marble gravestone to become harder and harder to read over time ? |
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| What climate does chemical weather favor the most ? |
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| What are major components of soil ? |
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| mineral matter,organic matter,water,and air |
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| A soils texture is determined by ? |
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| You use categories of clay,silt,and sand in the soil |
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| The main source of organic matter in soil is ? |
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| A soil associated with the hot and wet tropics is ? |
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| Pedalfer soils contain high amounts of ? |
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| iron oxide and aluminum-rich clays |
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| The process responsible for moving material down slope under the influence of gravity is ? |
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| What is the force behind mass movement ? |
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| 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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| Which of these factors affects the rate of weathering ? |
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| climate,chemical composition,of the exposed rock,surface area of the exposed rock |
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| Use figure 5-1 to determine what soil is called if it has 20% clay,60% silt,and 20% sand ? |
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| What are proportions of clay,silt,and sand shown at point B in figure 5-1 ? |
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| Clay 20%,silt 40%,sand 40% |
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| What are proportions of clay,silt,and sand shown at point A in figure 5-1 ? |
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| clay 60%,silt 20%,sand 20% |
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| What are proportions of clay,silt,and sand shown at point C in figure 5-1 ? |
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| clay 10%,silt 20%,sand 70% |
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| Why can the removal of vegetation trigger mass movements ? |
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| the pant roots bind the soil and regolith roots |
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| In the process of _______,water freezes and expands,enlarging cracks in rocks |
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| A large pile of debris that forms at the base of a slope is called ? |
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| What is the most important agent of chemical weathering ? |
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| Layer of rock and mineral fragments which covers nearly all of the Earths land surface |
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| The force that drives mass movements is ? |
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| What is the content in the soil type Pedocal ? |
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| Abundant calcite or calcium carbonate and are typically light grey-brown |
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| What is the location and content of the soil type Latrite ? |
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| Found in hot wet tropical areas.Iron oxides and aluminum oxides are present |
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| One of the most dramatic triggers of sudden mass movements is an ? |
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| _____the slowest type of mass movements involves the lifting and contracting of soil particles over time ? |
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| What are the three factors that affect the rate of weathering ? |
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| Mechanical weathering,rock characteristics,and climate |
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| How are soils classified based on texture ? |
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| You use percentages of clay,silt,and sand |
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| Explain the three processes that break rocks into smaller pieces during mechanical weathering ? |
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| Frost wedging,unloading.and biological activity |
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