What kinds of Paleogene and Neogene deposits are found in North America’s continental
interior? What was the source of these sediments? What will be an ideal response?
Sediments were deposited in marine and transitional environments. The only local sediment
source within the Great Plains was the Black Hills in South Dakota. Marine deposition occurred
in this area during the Cretaceous, followed by the origin of terrestrial deposits. Terrestrial
deposits indicate semitropical forests, giving way to grasslands. There are also incidents of
igneous activity.
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What kind of stress is deforming this block?
A) Shear B) Compression C) Tension
How does the inclination of Earth's axis change over the course of a year?
A) The inclination of Earth's axis becomes shorter. B) The inclination of Earth's axis becomes longer. C) The inclination of Earth's axis does not change. D) The inclination of Earth's axis becomes steeper. E) The inclination of Earth's axis becomes shallower.
A rock or mineral from which a valuable or useful metal or metal can be extracted is referred to as a(an)
A. economic mineral. B. sub-metallic. C. metal. D. ore.
The technology of a passive solar flat-plate collector features all of the following, except
A) a transparent glass or plastic cover. B) black interior surface. C) electrical backup for cloudy days. D) an array of tubes through which water passes.