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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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
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