This instrument works on essentially the same principles as echo sounder but can penetrate the bottom of the sea floor and provides more information.
A. seismic reflection profiler
B. sonar profiler
C. multibeam sonar
D. single beam sonar
E. seismic refraction profiler
Answer: A
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When warm air from the Gulf of Mexico meets cold, dry air from the artic in the Great Plains the result is what?
A) Thunderstorms and tornadoes B) A lack of snowfall in winter C) Chinook winds D) El Niño
Continental polar (cP) and continental Arctic (cA) air masses
a. ?both originate over polar oceans. b. ?form in summer only. c. ?originate over the ice- and snow-covered regions of the Arctic, northern Canada, and Alaska where long, clear nights allow for strong radiational cooling of the surface. d. ?bring strong thunderstorms. e. ?produce wet weather and temperatures around the freezing point.
Which of the following describes the time when pollution is most severe in urban areas?
A. when a large slow-moving anticyclone moves into an area B. when a storm system begins developing to the west C. when a cold upper-level low moves into a region D. when a warm front passes through the area
Many volcanic islands with a fringing reef will become _____ following thousands of years of gravity, erosion, and subsidence
a. atolls b. high islands c. continental islands d. low islands e. biodiversity hot spots