The orbital motion of a deep-water wave extends to a depth equal to ________.
A. the seafloor depth
B. one-half the wavelength
C. twice the wavelength
D. one-half the wave's height
E. the wave's height
Answer: B
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Whale falls support a large community of organisms including sharks, crabs, and bacteria.
Answer the following statement true (T) or false (F)
Veteran's Hospital, which collapsed during the San Fernando earthquake, was constructed of:
a. reinforced concrete b. nonreinforced concrete c. brick and mortar d. wood
Why are floods so common along the Red River of the North (in North Dakota, South Dakota, and Minnesota)?
A. The Red River Valley is geologically young (about 9,000 years old) and has not carved a deep valley. B. River flow increases as winter snow melts and meltwater runs northward into still frozen parts of the river. C. The gradient or slope of the riverbed is very low. D. All of these choices are correct.
The recent destructive wildfires in Australia were predictable because Victoria is located in the direst part of the continent.
a. true b. false