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USCG Auxiliary AUXWEA | 100% Correct
Answers | Verified | Latest 2024 Version
1 - 1 On a weather map, cold fronts are ind icated by ________ symbols and warm fronts by _______ symbols. - โโ a. dark, light b. triangle, semicircle [2] c. circle, triangle d. semicircle, triangle 1 - 2 To represent a warm or cold front on a weather map, the appropriate symbol is drawn on the side toward which - โโ a. the wind is blowing b. the center of low pressure is located c. the front is moving [2] d. the air is colder 1 - 3 If triangles and semicircles are shown on opposite sides of the same frontal boundary, the front is - โโ a. cold b. occluded c. stationary [2] d. warm 1 - 4 Near a cold front, ______ air is advancing
and replacing the ______ air on the other side. - โโ a. cold, warm [2] b. cloudy, clear c. moist, dry d. windy, calm 1 - 5 The approach of deteriorating weather is indicated by a - โโa. falling hygrometer b. rising barometer c. falling barometer [3] d. falling speedometer 1 - 6 For best results, an outdoor thermometer should be - โโa. bought from a hardware store b. mounted in a shady spot [3] c. filled with colored water d. read on cloudy days 1 - 7 Humidity is measured by an instrument called a/an - โโa. atomizer b. humidifier c. hygrometer [4] d. moisturizer 1 - 8 The amount of moisture actually in the air, as a _______ of what the air could contain, is called the _______ humidity. - โโa. ratio, measured b. percentage, relative [4]
lower pressure - โโa. to the SE b. to the SW c. to your left [5] d. behind you 1 - 14 Clouds of the _______ form indicate that there is little or no vertical motion of the air, whereas clouds of the _______ form indicate that up- and down-drafts are present. - โโa. cumulus, stratus b. stratus, nimbus c. stratus, cumulus [5] d. stratus, cirrus 1 - 15 Clouds are divided into ______ , ______ , and ______ families according to the heights of their bases. - โโa. high, middle, low [5] b. low, high, extensive vertical development c. stratus, cumulus, cirrus d. high, low, surface 1 - 16 Clouds of extensive vertical development include - โโa. stratocumulus and cumulonimbus b. towering cumulus and nimbostratus c. towering cumulus and cumulonimbus [6] d. nimbostratus and cumulonimbus 1 - 17 The prefix "nimbo" or suffix "nimbus" is attached to a cloud form when it is - โโa. dissipating
b. lowering c. raining [6] d. thickening 1 - 18 An approaching cold front would be ind icated by ______ , ______, and ______ clouds. - โโa. cirrus, cirrocumulus, altocumulus [6] b. cirrus, cirrostratus, altostratus c. cirrus, cirrocumulus, nimbostratus d. altocumulus, cirrocumulus, cirrus 1 - 19 An approaching warm front would be ind icated by ______ , ______, and ______ clouds. - โโa. cirrus, cirrocumulus, altocumulus b. cirrus, cirrostratus, altostratus [6] c. cirrus, cirrocumulus, nimbostratus d. altocumulus, cirrocumulus, cirrus 1 - 20 With your arm stretched out and your bottom finger on the horizon, you observe that the cloud base loses detail at a point on a sight line that is half your hand high. You estimate the height of the cloud base to be ______ feet. - โโa. 2,500 [6, 7] b. 5, c. 10, d. 25, 2 - 1 The most important cause of weather is - โโa. gravity b. latent heat of condensation c. uneven solar heating [11] d. regions of high and low pressure
2 - 7 A temperature of 35 oC is equal to ___ oF. - โโa. 31 b. 51 c. 95 [13] d. 121 2 - 8 Which of the following statements are true? - โโa. A quart of air at 70 oF contains less heat than a quart of water at 70 oF. b. A pint of air at 70 oF contains less heat than a quart of air at 70 oF. c. A quart of air at 50 oF contains less heat than a quart of air at 70 oF. d. All of the above. [14] 2 - 9 Pressure is proportional to the product of - โโa. absolute temperature and density [14] b. temperature and absolute density c. temperature and absolute humidity d. absolute temperature and humidity 2 - 10 Which is heavier, a pound of air or a pound of iron? - โโa. The air b. The iron c. Neither, they have the same density d. Neither, but the iron is more dense [13] 2 - 11 An Auxiliarist weighing 150 pounds stands on a scale with an area of half a square foot. A weight of 300 pounds sits on a piece of plywood with an area of one square foot. - โโa. The pressure on the scale is less than the
pressure on the plywood. b. The pressure on the scale is the same as the pressure on the plywood. [14] c. The pressure on the scale is more than the pressure on the plywood. d. There is more weight on the scale. 2 - 12 When air is free to expand, its temperature may be changed by - โโa. changing its volume b. adding heat energy c. removing heat energy d. all of the above [14, 15] 2 - 13 If the volume of some air increases by ten percent, but the temperature of the air remains constant, the air pressure will - โโa. decrease by ten percent [15] b. increase by ten percent c. not change d. be proportional to the volume 2 - 14 Standard atmospheric temperature and pressure at sea level are - โโa. 59 oF and 29.92 inches of mercury b. 15 oC and 29.92 millibars c. 15oC and 1013.2 millibars d. either a. or c. [16] 2 - 15 Standard values of atmospheric temperature, pressure, and density - โโa. are world wide averages
c. is usually greater over coastal areas and oceans than over mid-continental areas d. all of the above [17, 18] 2 - 20 Air is saturated when it contains - โโa. four percent water vapor b. as much water vapor as it can hold at a given temperature [19] c. any water vapor below the dew point d. none of the above 2 - 21 The amount of water vapor in the air, expressed as a percentage of the amount that would saturate the air, is called the - โโa. density b. dew point c. relative humidity [19] d. absolute humidity 2 - 22 Moist air in the atmosphere can be saturated by - โโa. removal of heat b. addition of moisture c. cooling due to expansion d. all of the above [19] 2 - 23 If the temperature of the air falls below its dew point, then - โโa. condensation or deposition will occur until the dew point equals the lower temperature [19] b. moisture will evaporate
c. the saturation will be reduced d. none of the above 2 - 24 The air in the atmosphere absorbs heat when water changes state in which of the following processes? - โโa. Condensation and evaporation b. Deposition and sublimation c. Freezing and condensation [20] d. Melting and freezing 2 - 25 The best measurement for predicting the likelihood of rain is the - โโa. air temperature b. dew point [20] c. relative humidity d. absolute humidity 3 - 1 A convection current transports _____ by means of ________. - โโa. temperature, heat exchange b. heat, conduction c. heat, material exchange [25] d. radiation, transfer 3 - 2 Warm, dry air rising into colder air transports _________ heat. - โโa. latent b. molecular c. sensible [25] d. sensitive
b. radio c. ultraviolet d. visible 3 - 8 Heat from the sun is ultimately returned to space by mainly means of - โโa. reflected ultraviolet radiation b. infrared radiation [27] c. advection and convection d. sublimation 3 - 9 Convection in the atmosphere occurs when ______ warms the ______. - โโa. ultraviolet, ozone layer b. latent heat, troposphere c. solar radiation, surface [28] d. sensible heat, tropopause 3 - 10 The standard atmosphere temperature at an altitude of ten thousand feet is - โโa. - 16 oC b. - 5 oC [28] c. +39 oC d. +39 oF 3 - 11 The three factors which cause deviations from the global average heat balance are: - โโa. advection, diurnal, and seasonal b. diurnal, latitude, and longitude c. latitude, seasonal, and diurnal [28] d. latitude, longitude, and convection
3 - 12 Diurnal variation means that the earth ______ heat during the day and ______ heat during the night. - โโa. absorbs, advects b. gains, loses [28] c. absorbs, emits d. gains, reflects 3 - 13 The earth's surface temperature is generally coldest - โโa. just after sundown b. at midnight c. just before dawn d. just after dawn [28] 3 - 14 The earth emits infrared radiation - โโa. all the time [29] b. only at night c. only during the day d. only from the tropics 3 - 15 Atmospheric convection not associated with frontal activity is generally strongest - โโa. just after dawn b. in the morning c. in the afternoon [29] d. just before sunset 3 - 16 Seasonal variation of solar heating is caused by the earth's ______ and ______. - โโa. atmosphere, axial tilt b. axial tilt, orbit around the sun [29] c. orbit, latitude d. axial tilt, latitude
c. ice pellets d. freezing rain [31] 4 - 1 ______ are the atmosphere's way of trying to smooth out the uneven distribution of solar heating on the global scale. - โโa. Convergence and divergence b. Gravity and friction c. Prevailing winds [35] d. Sea and land breezes 4 - 2 Hadley's theory provides the useful insight that air tends to rise where ______ and descend where they ______. - โโa. surface winds converge, diverge [35] b. surface winds diverge, converge c. winds aloft converge, diverge d. winds aloft diverge, converge 4 - 3 ______ is the main reason why global circulation of the atmosphere is different from Hadley's single- cell theory. - โโa. Friction b. Gravity c. Rotation [36] d. Uneven solar heating 4 - 4 When an object traveling in a straight line appears to follow a curved path because you are rotating while you observe it, the apparent motion is called the - โโa. convergence b. Coriolis effect [36] c. Coriolis force d. divergence 4 - 5 Your horizon circle on the earth's surface
always has some rotation about the local vertical except at - โโa. the equator [37] b. mid- latitudes c. the poles d. the rotation axis 4 - 6 Horizon circle rotation explains why an observer standing on the earth should see ______ winds moving along a curved track. - โโa. easterly b. gusty c. northerly [37] b. westerly 4 - 7 ______ force refers to the force exerted by a body moving in a circle and is directed ______ from the ______. - โโa. Centrifugal, inward, body b. Pressure gradient, outward, center c. Gravity, inward, earth d. Centrifugal, outward, axis of rotation [37, 38] 4 - 8 ______ winds follow a curved track to the south in the northern hemisphere due to ______. a. Easterly, decreased centrifugal force b. Westerly, increased gravitational force c. Westerly, increased centrifugal force [38] d. Westerly, increased pressure gradient - โโa. Easterly, decreased centrifugal force b. Westerly, increased gravitational force c. Westerly, increased centrifugal force [38] d. Westerly, increased pressure gradient
b. slow down, speed up c. descend, rise d. speed up, slow down 4 - 14 The force of friction on a westerly jet stream is directed toward the - โโa. north b. east c. south d. west [42] 4 - 15 The force of friction on winds in the atmosphere becomes negligible in comparison with other forces - โโa. at the surface b. at a height of 3,000 feet above the surface [42] c. at altitudes above 3,000 feet d. in the horse latitudes and the doldrums 4 - 16 Forces affecting the wind are vectors, i.e., they possess - โโa. velocity and speed b. direction and velocity c. magnitude and direction [38] d. none of the above 4 - 17 Steady winds tend to blow parallel to the isobars when the effects of ______ and ______ are negligible. - โโa. local and global rotation b. friction and Coriolis c. local rotation and friction [42]
d. pressure gradient and centrifugal force 4 - 18 Winds affected by friction blow - โโa. across the isobars from low to high pressure b. across the isobars from high to low pressure [42] c. at right angles to the isobars d. parallel to the isobars 4 - 19 Assuming all other things equal, the highest wind speed should be expected where the isobars - โโa. are straight b. are parallel c. form a ridge [43] d. form a trough 4 - 20 A large amount of cold air is advected to warmer regions and/or vice versa when Rossby waves have large - โโa. amplitudes [44] b. numbers c. pressures d. wavelengths 5 - 1 Besides the global and micro scales, meteorologists classify weather patterns of different sizes as - โโa. large and small b. synergistic and mesoscale c. synoptic and mesoscale [49] d. mesoscale and molecular scale 5 - 2 Synoptic scale features include - โโa. air masses and circulation around highs [49]
