Chapter 5 Study Guide Essay Example

Chapter 5 Study Guide Paper The process that occurs when physical force break rock into smaller pieces without changing the rocks chemical composition is called ? Mechanical weathering What is the weathering processes involving the constant freezing and thawing of water? Frost wedging What are the process of mechanical weathering? Frost wedging , unloading , biological activity When water freezes, its volume______? Which of the following is the result of chemical weathering ? A rock that has been changed into one or more compound What kind of weathering would cause the writing on a marble gravestone to become harder and harder to read over? Chemical weathering A soils texture is determined by ________? Clay, silt and sand The main source of organic matter in soil is _____? Plants In figure 5-2 what is the layer labeled Y composed of ? A soil that is characteristic of the humid eastern United States is _________? A soil associated with the hot and wet tropics is ________? laterite Which of the following human activities has caused an increase in soil erosion? The process responsible for moving material down slope under the influence of gravity is called? Mass movement What is the force behind mass movement? Gravity What is the slowest type of mass movement ? What is responsible for the formation of exfoliation domes The gradual rounding of the corners and the edging of angular blocks of rocks is called ? The process called__________ involves physical forces that break rock into smaller pieces In the process of ___________ , water freezes and expands, enlarging cracks in rocks A large pile of debris that forms at the base of a slope is called ? The most important agent in chemical weathering is? The layer of rock and mineral fragments produced by weathering, and covering nearly all of earths land surface is called ? Human activities that remove vegetation have resulted in an _______________ in soil erosion The force that drives mass movements is ? List three factors that affect the rate of weathering How are soils classified based on textures ? What are the three processes that breaks rock into smaller pieces during mechanical weathering? Use figure 5-1 to determined what a soil is called if it has 20 percent clay, 60 percent silt and 20 percent In a well developed soil profile which horizon is the uppermost layer? In figure 5-2, what is the layer layered X?