Why is the SOFAR layer efficient for sound travel?
a. Refraction causes the sound energy to remain within the layer.
b. The density of the SOFAR layer traps the sound energy.
c. Sound energy bends away from layers of lower sound velocity.
d. Temperatures and salinity conditions are homogeneous.
e. Sound travels rapidly in this layer.
a
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Muslims believe that Muhammad had a mystical experience in which he visited ________ and, from there, heaven. As a consequence, this city has been a holy city of Islam since A.D. 638, just a few years after Muhammad's death
A) Jerusalem B) Istanbul C) Cairo D) Baghdad E) Damascus
Suppose yesterday morning you noticed ice crystals (frost) on the grass, yet the reported
minimum temperature was only 35o F. The most likely reason for this apparent discrepancy isthat:a. temperature readings are taken in instrument shelters more than 5 feet above the ground. b. the thermometer was in error. c. the newspaper reported the wrong temperature. d. the thermometer was read before the minimum temperature was reached for that day. e. the thermometer was read incorrectly.
The continental crust has a greater percentage of continental shelves and slopes than mountains
Indicate whether the statement is true or false
Narrow canyons are formed when
A. downward incision is slower than widening of the canyon by erosion. B. downward incision is faster than widening of the canyon by erosion. C. erosion widens the canyon before the downward incision begins.