Lecture 13 2nd test

Lecture 13 2nd test - Quote of Day “For what profit is it...

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Unformatted text preview: Quote of Day “For what profit is it to a man if he gains the whole world, and lose his own soul?” ( Matthew) http://www.bartleby.com/66/97/60797.html ¾ Sun is the driving force for weathering, erosion, and soil formation. ¾ Three terms to know • Weathering – the physical breakdown and chemical alteration of rock at Earth’s surface • Mass wasting – the transfer of rock and soil downslope under the influence of gravity • Erosion – the physical removal of material by mobile agents such as water, wind, ice, or gravity Weathering and soil formation Figure 1.21 Weathering Two general categories of weathering ¾ Mechanical weathering – physical breakdown of rocks into smaller pieces • Frost wedging • Unloading • Thermal expansion • Biological activity ¾ Chemical weathering – chemical breakdown or alteration of minerals in rock especially by water. • Dissolution • Oxidation • Hydrolysis ater is a very unusual compound in that when it freezes, it expands by almost 10%. This is the reason a can of soda will oftentimes burst when frozen in your home freezer and the reason ice floats on water. http://alms.biology.ualberta.ca/SiteGraphics/water-fig_2.jpg http://blog.danwong.com/wp-content/uploads/2007/06/fridge_cans_450.jpg http://www.aspirasi-ndp.com/arkib/images/ICERBERG.jpg Weathering...
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Lecture 13 2nd test - Quote of Day “For what profit is it...

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