Ultrasonic sound waves have relatively
A. low frequencies.
B. long wavelengths.
C. both of these
D. none of the above
Answer: D
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Equatorial regions are characterized by a ________ pressure system and ________ air flow
A) high, descending B) neutral, no C) high, ascending D) low, ascending E) low, descending
_____ are seismically inactive areas of oceanic ridges that show evidence of past transform fault activity
a. Seamounts b. Hydrothermal vents c. Fracture zones d. Abyssal plains e. Abyssal hills
If rocks of a certain facies are found in an outcrop, it is possible to know where within a convergent
plate boundary those rocks formed. Indicate whether the statement is true or false.
Pebbles and cobbles would most likely be transported by a river as _____
a. bed load b. discharge load c. suspended load d. solution load e. base flow