Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG General Navigation (Set 33)

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Question 1 of 30

Mechanical lifting of air by the upslope slant of the terrain is called __________.

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30 MCQs

#1 Mechanical lifting of air by the upslope slant of the terrain is called __________. #2 The region containing 3/4 of the mass of the atmosphere and the region to which are confined such phenomena as clouds, storms, precipitation and changing weather conditions is called __________. #3 What is the primary source of the earth's weather? #4 Weather patterns in the Gulf area of the United States are _____. #5 What natural feature is responsible for the rather even climate found on the Florida peninsula throughout the year? #6 In reading a weather map, closely spaced pressure gradient lines would indicate __________. #7 Isobars on a weather map are useful in predicting __________. #8 An isotherm is __________. #9 A line on a weather chart connecting places which have the same barometric pressure is called an __________. #10 Lines drawn through points on the Earth having the same atmospheric pressure are known as __________. #11 Using the surface analysis in illustration D049NG below, what wind speed is reported in position C? #12 The largest waves (heaviest chop) will usually develop where the wind blows __________. #13 You can follow the approach of a dangerous cyclonic storm by inspecting __________. #14 While in port, you can follow the approach of a dangerous cyclonic storm by inspecting __________. #15 In a weather report, the term "visibility" expresses __________. #16 It is desirable that a vessel encountering hurricane or typhoon conditions sends weather reports to the closest meteorological service at least every __________. #17 When within 300 miles of a named tropical storm or hurricane, it is standard practice to send weather reports every __________. #18 Weather observations provided by each weather station include all of the following except __________. #19 Your vessel is participating in the Voluntary Observing Ship Program, at 1800 ZT on 31 October your position is LAT 24°50'N, LONG 92°37'W. You are preparing WS Form B-80 as seen in illustration D041NG below. How should you encode the first three groups after the call sign if you estimate the wind? #20 Your vessel is participating in the Voluntary Observing Ship Program, at 0600 ZT on 31 January your position is LAT 00°49'S, LONG 84°27'E. You are preparing WS Form B-80 as seen in illustration D041NG below. How should you encode the first three groups after the call sign if you estimate the wind? #21 Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The dry bulb thermometer reads 34°F and the wet bulb thermometer reads 31°F. How would you encode the air temperature groups in the report? #22 Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The dry bulb thermometer reads 78°F and the wet bulb thermometer reads 75°F. How would you encode the air temperature groups in the report? #23 Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. The dry bulb thermometer reads 54°F and the wet bulb thermometer reads 50°F. How would you encode the air temperature groups in the report? #24 Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustration D041NG below. You are hove to in a hurricane on a heading of 328°T. The wind is from 030° true at 119 knots. How should this be encoded on the weather report form? #25 Your vessel is participating in the Voluntary Observing Ship Program, at 1200 ZT on 31 August, your position is LAT 43°14'S, LONG 175°44'E. You are preparing WS Form B-80 as seen in illustration D041NG below. How should you encode the first three groups after the call sign if you estimate the wind? #26 What kind of weather would you expect to accompany the passage of a tropical wave? #27 If the current and wind are in opposite directions, the sea surface represents __________. #28 You are steaming in the open ocean of the North Pacific between the Aleutian Chain and Hawaii. A warning broadcast indicates that an earthquake has occurred in the Aleutians and has generated a tsunami that is predicted to hit Hawaii. What action is necessary for the ship's safety? #29 The height of a wave is the vertical distance __________. #30 What is the distance from the bottom of a wave trough to the top of a wave crest?

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