An effective way to measure soil erosion in a region is to measure the
A. Sediment load of rivers
B. Distance the dust travels
C. Amount lost on crop fields
D. All of these are effective ways to measure the loss
E. Amount of dust in the air
Answer: A
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The accompanying graph shows the number of violent tornados in the last 60 years. Based on when most global warming has occurred, one would conclude
A) global warming has had a major impact on the number of tornados.
B) global warming has had a major impact on the number of tornados in the early part of the century.
C) global warming has had a major impact on the number of tornados since 2000.
D) global warming has not had an impact on the number of tornados.
All rain tends to be slightly acidic
Indicate whether the statement is true or false
What type of lava is produced at a divergent plate boundary?
A) Rhyolitic B) Andesitic C) Basaltic
Farmer Brown lives in a semi-arid part of the United States with numerous small lakes associated with glacial deposits of sand and gravel
He decides he needs to irrigate part of his land and drills a shallow well 100m from his property line with Farmer Smith who has a small lake just across the property line, and he depends on this lake to water his cattle. By late summer, Farmer Smith goes out to his lake and discovers it is dry. What happened? A) There must have been a drought or Farmer Brown wouldn't have needed to irrigate, so it must be natural. B) Farmer Brown has been secretly pumping water from Farmer Smith's lake, and now Farmer Smith is going to come out at night with a shotgun. C) Farmer Browns well has dropped the water table in the well's cone of depression, and the well has led to the lake drying up. D) Farmer Brown's well produced a sinkhole that swallowed up Farmer Smith's lake.