Describe where flow velocity is highest in a semi-straight channel. Why is this the case? What will be an ideal response?
Flow velocity is highest in the center of the channel, just below the surface, where there is little
friction. At the bottom and sides of the channel, the roughness of the channel bed due to sediments
slows the water down. There is even some frictional resistance where the water meets the air
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Research into in situ (underground) coal gasification is in progress, but there is concern about subsidence over the gasified coal beds.
Answer the following statement true (T) or false (F)
Meander scrolls are produced by:
a. deposition on natural levees b. deposition on a floodplain c. deposition in an oxbow lake d. deposition on point bars
Which of the following statements about increasing ocean temperatures as a result of global warming is correct?
A) Deep ocean waters are not yet showing signs of increased temperature. B) Deeper ocean waters are warming faster than expected. C) Ocean warming has not been documented below a depth of 0.5 kilometers. D) The warming of surface waters is uniform throughout the ocean. E) There has been an overall decrease in ocean surface temperature.
On which landmass does a continental glacier exist?
a. Europe b. North America c. South America d. Greenland e. Eurasia