Private Pilot Test Prep

3444. If the Temperature/dewpoint spread is small and decreasing, and the temperarue is 62 grades F, what type weather is most likely to develop?. Freezing precipitation. Thunderstorms. Fog or low clouds.

3421. The boundary between two different air masses ir referred to as a. frontolysis. frontogenesis. front.

3422. One of the most easily recognized discontinuities across a front is. a change in temeperature. an increase in cloud coverage. an increase in the relative humidity.

3451. During which period is a sea breeze front most suitable for soaring flight?. shortly after sunrise. during the early forenoon. During the afternoon.

3385. Which weather conditions should be excepted beneth a low level temperature inversion layer when the relative a low-level temperature inversion layer when the relative humidity is high?. Smooth air, poor visibility, fog, haze, or low clouds. light wind shear, poor vidibility, haze, and light rain. Turbulent air, poor visibility, fog, lowstratus type clouds, and showery precipitation.

3403. What measurement can be used to determine the stabilit on the atmosphere?. atmospheric pressure. Actual lapse rate. surface temperature.

3404. What would decrease the stability of an air mass?. warming from below. cooling from below. Drecrease in water vapor.

3405. What is a characteristic of stabe air?. stratiform clouds. unlimited visibility. Cumulus Clouds.

3408. What feature is associated with a temperature inversion?. a stable layer of air. an Unstable layer of air. chinook winds on mountain slopes.

3412. what are characteristics of a moist, unstable air mass?. Cumulifrom clouds and showery precipitacion. poor visibility and smooth air. stratiform clouds and showery precipitation.

3413. what are characteristics of unstable air?. turbulence and good surface visibility. turbulence and poor surface visibility. nimbustratus clouds and good surface visibility.

3414. a stable air mass is most likely to have which characteristic?. Showery precipitation. Turbulent air. Poor surface visibility.

3406. Moist, stable air flowing upslope can be expected to. produce stratus type clouds. cause showers and thundersotrms. develop convective turbulence.

3407. if an unstable air mass is forced upward, what type clouds can be expected?. Stratue clouds with little vertical development. stratus clouds with considerable associated turbulence. clouds with considerable vertical development and associated turbulence.

3424. steady precipitation preceding a front is an indication of. stratiform clouds with moderate turbulence. cumuliform clouds with little or no turbulence. stratiform clouds with little or no turbulence.

3433.. the conditions necessary for the formation of cumuloniimbus clouds are a lifting action and. unstable air containing an excess of condesantion nuclei. unstable, moist air. either stable or unstable air.

3409. What is the approximate base of the cumulus clouds if the surface air temperature at 1000 feet MSL is 70 grades F and the dewpoint is 48 grades F?. 4000 feet MSL. 5000 feet MSL. 6000 feet MSL.

3410. at approximately what altitude above the surface would the pilot except the base of cumuliform clouds if the surface air temperature is 82 grades F and the dewpoint is 38 grades F?. 9000 feet AGL. 10000 feet AGL. 11000 feet AGL.

3416. clouds are divided into four families according to their. outward shape. heigh range. composition.

3416. what clouds have the greatest turbulence?. Towering cumulus. cumulonimbus. nimbostratus.

3416. an almond or lens-shaped cloud which appears statioanry, but which may contain winds of 50 knots or more, is referred to as. an inactive frontal cloud. a funnel cloud. a lenticular cloud.

3434. what feature is normally associated with the cumulus stage of a thunderstorm?. roll cloud. continuos updraft. frequent lightning.

3435. wich wether phenomenom signals the begining of the mature stage of a thunderstorm?. the appearance of an anvil tp. precipitation begining to fall. maximum growth rate of the clouds.

3436. what conditions are necessary for the formation of thunderstorms?. high humidity, lifting force, and unstable conditions. high humidity,, high temperature, and cumulus clouds. lifting force, moist, and extensive cloud cover.

3437. during the life cycle o a thundertorm, which stage is characterized predominately y downdrafts?. cumulus. dissipating. mature.

3438. thunderstorms reach their greatest intensivity during. mature stage. downdraft stage. cumulus stage.

3441 if there is thunderstorm activity in the vicinity of an airport at which you plan to land, which hazardous atmospheric phenomenom might might be excepted on the landing approach?. precipitation static. wind-shear turbulence. steady rain.

3426. where does wind shear occur?. only at higher altitudes. only at lower altitudes. at all altitudes, in all directions.

3427. When may hazardous wind shear be expected?. when stable air crosses a mountain barrier where it tends to flow in layers forming lenticular clouds. In areas of low level temperature inversion frontal zones and clear air turbulence. Following frontal passage when stratocumulus clouds form indicating mechanical mixing.

3428. A pilot can expect a wind shear zone in a temperatura inversion whenever the windspeed at 2000 to 4000 feet above the surface is at least. 10 knots. 15 knots. 25 knots.

3402. The presence of ice pellets at the surface is evidence that there. are thunderstorms in the area. has been cold frontal passage. is a temperature inversion with freezing rain at a higher altitude.

3429. one in-flight condition necessary for structural icing to form is. small temperature/dewpoint spread. stratidorm clouds. visible moisture.

3443. what situation is most conductive to the formation of radiation fog?. warm, moist air over low, flatland aereas on clear, calm nigths. moist tropical air moving over cold, offshore water. the movement of cold air over much warmer water.

3446. what types of fog depend upon wind in order to exist?. radiation fog and ice fog. steam fog and ground fog. advection fog and upsolpe fog.

3447. low-level turbulence can occur and icing become hazardous in which type of fog?. rain-induced fog. upslope fog. steam fog.

3401. which conditions result in the formation of frost?. the temperature of the collecting suface is at or below freezing when small droplets of moisture fall on the surface. the temperature of the collecting surface is at or below the dewpoint of the adjacent air and the dewponit is below freezing. the temperature of the surrounding air is at or below freezing when small drops of moisture fall on the collecting surface.

3432. how does frost affect the lifting surfacces airplane on takeoff?. Frost may prevent the airplane from becoming airborne at normal takeoff speed. frost will change the camber of the wing, increasing lift during takeoff. frost may cause the airplane to become airbone with a lower angle of attack at a lower indicate airspeed.

3206. how will frost on the wings of an airplane affect takeoff performance?. Frost will disrupt the smooth flow of air over the wing, adversely affecting its litfting capability. frost will change the camber of the wing, increasing its capability. frost will cause the airplane to become airborne with a higher angle of attack, decreasing the stall speed.

3431. why is frost considered hazardous to flight?. frost changes the basic aerynamic shape of the airfoils, thereby decreasing lift. frost slows the airflow over the airfolis, thereby increasing control effectiveness. frost spolis the smooth flow of air over the wings, thereby decreasing lifting capanility.