Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Navigation (Set 43)
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Question 1 of 30
Most high pressure areas in the United States are accompanied by __________.
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30 MCQs #1 Most high pressure areas in the United States are accompanied by __________. #2 A phenomenon where the atmospheric pressure is higher than that of other surrounding regions is called __________. #3 In the Southern Hemisphere the wind circulation in a high pressure system rotates __________. #4 Compared to a low pressure system, generally the air in a high is __________. #5 Which weather system produces strong cold winds called "Northers" during the winter months in the Gulf of Mexico? #6 You are located within a stationary high pressure area. Your aneroid barometer is falling very slowly. This indicates a(n) __________. #7 The dry-bulb temperature is 78°F and the wet-bulb temperature is 62°F. What is the relative humidity? #8 The dry-bulb temperature is 78°F (26°C) and the wet-bulb temperature is 68°F (20°C). What is the relative humidity? #9 Relative humidity is the percentage of water vapor that is in the air as compared to the maximum amount it can hold at __________. #10 The dew point is reached when the __________. #11 The expression "the air is saturated" means __________. #12 The temperature at which the air is saturated with water vapor and below which condensation of water vapor will occur is referred to as the __________. #13 The dew point temperature is __________. #14 As the temperature for a given mass of air increases, the __________. #15 As the temperature of an air mass decreases, the __________. #16 Relative humidity is defined as __________. #17 On the Mississippi and Ohio Rivers, there is a special type of fog known as steam fog. It is caused by __________. #18 Steam fog is most likely to occur on the Mississippi and Ohio Rivers in __________. #19 While upbound through Memphis, the weather report on the TV news indicates that a cold front will cross western Kentucky and Tennessee the next morning. What weather should accompany this front? #20 While passing through Memphis, the weather report on the TV news indicates that a cold front is crossing western Kentucky and Tennessee. Tomorrow's weather will be dominated by a high pressure area. What weather should you expect tomorrow? #21 While upbound through Memphis, the weather report on TV news indicates that a warm front is stationary over the Kentucky - Missouri - Tennessee areas. What weather conditions should you expect? #22 Under ideal viewing conditions, the dimmest star that can be seen with the unaided eye is of what magnitude? #23 Discounting slip, if your vessel is turning RPM for 10 knots and making good a speed of 10 knots, the current could be __________. #24 What is the definition of height of tide? #25 You are running parallel to the coast and estimate that the current is against you. In plotting a running fix using bearings from the same object on the coast, the greatest safety margin from inshore dangers will result if what speed is used to determine the fix? #26 Some locations maintain a zone time of -13. What are the Greenwich time and date if the zone time and date are 0152, 10 January? #27 The set of the equatorial countercurrent is generally to the __________. #28 A vessel's position should be plotted using bearings of __________. #29 Given are the courses and speeds of 4 vessels. The navigator of which vessel would be required to know the actual time of meridian transit in order to take an accurate observation at LAN ? #30 What is the equivalent of 4°36' in time units?
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