Briefly describe how alluvial fans are formed. Why do you think there is more than one stream on the Trail Canyon alluvial fan? Relate your answer to the process by which alluvial fans are formed.
What will be an ideal response?
The fan is produced by flowing water that loses velocity as it leaves the constricted channel of the canyon and, therefore, drops layer upon layer of sediment along the base of the mountain block. Water then flows over the surface of the fan and produces a braided drainage pattern, shifting from channel to channel with each flood event.
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Soil erosion is primarily a major problem only at the site where it occurs
Indicate whether the statement is true or false
Major coal deposits are found in all of the following except:
A) Iran B) Turkey C) Tunisia D) Qatar
The ______ ______ in the earth's stratosphere is seasonally centered over Antarctica, and scientists keep constant watch as it dwindles, thanks to the Montreal Protocol
Fill in the blank(s) with correct word
When the speed of a ball increases by the same amount each second, its acceleration
A. varies. B. also increases each second. C. decreases each second. D. is constant.