Aerospace Dimensions #3 Study Questions

The fundamental cause of the Earth’s various weather conditions is when _________________________. a. the moon is full b. the tides are high c. the sun heats the earth d. pressure changes

What impacts weather by adding to the temperature and pressure differences, air movement, and adds an ingredient for producing clouds? a. The winter solstice b. Warm air rising c. The spring equinox d. Seasonal change

Warm air has _______ molecules than cold air. a. less b. more c. smaller d. larger

Airplane engines work more efficiently in ____________________ weather. a. light, warmer b. moderately warm c. moist d. dense, colder

Unequal heating causes air movement globally. This is called a. circulation b. equinox c. coriolis d. doldrums

The jet stream develops when there are strong temperature differences in the upper __________. a. stratosphere b. ionosphere c. troposphere d. mesosphere

The jet stream is usually stronger and dips farther south in the __________. a. winter b. summer c. spring d. fall

Three of the very basic weather elements are wind, temperature, and _________. a. climate b. precipitation c. condensation d. pressure

In the U.S., wind is expressed in either miles per hour or ____________. a. leagues b. knots c. furlongs d. fathoms

The tool for estimating wind speed is called the Beaufort Scale and has been around since _________. a. 1826 b. 1798 c. 1805 d. 1901

A twelve on the Beaufort Scale means that the wind speed is ___________. a. 73 mph or higher b. 55-63 mph c. 32-38 mph d. 55-63 mph

If you go outside on a windy day and notice twigs and small branches broken off trees then, according to the Beaufort Scale, the wind speed is estimated at __________ miles per hour. a. 4-7 b. 19-24 c. 55-63 d. 39-46

According to the wind chill index, if the wind speed is 20 mph and the temperature is 15 degrees Fahrenheit, then the wind chill makes it feel like _____________. a. 9 degrees b. -17 degrees c. -24 degrees d. -5 degrees

_________ are winds blowing toward the side of the plane. a. Microbursts b. Jet streams c. Tailwinds d. Crosswinds

To counteract increased lift on the airplane due to increased headwinds from a microburst, the pilot will point the nose of the airplane ___________. a. down b. up c. left d. right