In the United States, damage from expansive clay soils is approximately as great as damage from all other geologic hazards combined.
Answer the following statement true (T) or false (F)
True
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Which of the following is the name given to the radio waves produced by lightning?
A. St. Elmo's fire B. sferics C. thunder D. sonic boom
To which numbered depth would the effects of this wave likely reach?
A) Only on the surface
B) 1
C) 2
D) 3
E) Much deeper than 3
What does the deep red color in this soil profile suggest?
A) Magnesium is present because the area was recently submerged beneath a shallow sea
B) Glaciers have scoured the landscape
C) Iron-bearing minerals have been leached downward
D) The soils are water logged most of the time
E) There is an extreme amount of organic material throughout the profile
A rock containing an inclusion (i.e., fragment of another rock) must be younger than the inclusion.
a. true b. false