Sunday, August 2, 2009

Science: Mass Movement, Glaciers & Weathering?

Why can the removal of vegetation trigger mass movements?


a). The soil loses nutrients and begins to crumble


b). The plant roots bind the soil and regolith together


c). The plant roots lubricate the loose sediment





One characteristic of glacial movement is:


a) new snowfall accumulates in a zone at the bottom of a glacier


b) the zone of wastageis at the top of a glacier


c) the movement depends on the balance between accumulation and wastage.





Chemical weathering would be:


a) most effective in a warm dry climate


b) most effective in a cold dry climate


c) most effective in a warm humid climate

Science: Mass Movement, Glaciers %26amp; Weathering?
b


The roots from the plants hold the soil in place when they are removed slumping can occur.





c


When more snow accumulates the glacier grows and when it melts it retreats the the movement of the glacier is dependent upon that.





c


Generally chemical reactions are more likely to take place under warmer temperatures. With more components in the system, (humidity with water) increases the rate at which the reaction occurs.
Reply:a. c. c.

quince

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