ection 3.3 ×w. Answer Math Que ×KaTITANium xvOH Secure https://moodle-2017-2018.

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ection 3.3 ×w. Answer Math Que ×KaTITANium xvOH Secure https://moodle-2017-2018.fullerton.edu/mod/quizjattempt.php?attempt-508803 tanium 2017-2018 83 Vox Chapter 7 Quiz × S volca Which soll horizon is described by the B layer? Select one: a. Dissolved compounds are leached away from this layer (t loses clay, aluminum, and iron). Sand and silt. Ob. Hard, chalky, and white. Rich in calcium C. Topsoil. Dark, loose, and crumbly, with some organic matter. d, Light, dense, and low in organic content. Leached material ends up here. e. Transition between soil and rock. O 5 Physical weathering that results from a decrease in pressure on a rock (for example as it is uplifted in the crust) is callecd Select one: o a. Unloading b. Slaking c. Hydrolysis d. Abrasion e. Frost wedging O n 6 Chemical weathering is the most important weathering process in climates that are: ed Select one: out of a. cold and dry b, arctic and wet c.hot and dry d. warm and humid e. warm and dry

Explanation / Answer

d, Light dense and low in organic content. Leached material ends up here. It is commonly referred to as sub soil. It consists of mineral layers which may contain concentrations of clay or minerals such as iron or aluminium oxides or organic material moved there by leaching.

a unloading . Unloading occurs when overlying material, such as soil or another rock stratum, is removed (most commonly through erosion) and confining pressure on the underlying rock is decreased

d, warm and humid. This is because chemical wethering requires water and it is accelerated as the temperature increases.

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