Instructions: Choose one answer from each pair of selections. Most of the visibility problems that occur at airports, which can suspend flights and even close airports, are caused by COLD WARM fogs.
Question 2Instructions: Choose one answer from each pair of selections. ADVECTION RADIATION fog forms when the wind moves warm, moist air over a sufficiently colder surface and the moist air is cooled to its saturation point.
Question 3Instructions: Choose one answer from each pair of selections. Dew is more likely to form on nights that are CLEAR AND CALM CLOUDY AND WINDY.
Question 4Instructions: Choose one answer from each pair of selections. Humid air is slightly MORE LESS dense than dry air with the same temperature.
Question 5Instructions: Choose one answer from each pair of selections. A large wet-bulb depression measured with a sling psychrometer indicates that a LARGE SMALL amount of water is evaporating from the wet-bulb thermometer into the air and that the relative humidity is low.
Question 6Instructions: Choose one answer from each pair of selections. Water departments in many cities in the desert southwest encourage their customers to water lawns early in the day. This is because the relative humidity is at its HIGHEST LOWEST value in the morning and the rate of evaporation from wet soil will be relatively low.
Question 7Instructions: Choose one answer from each pair of selections. When air is saturated, the rate of evaporation is GREATER THAN EQUAL TO the rate of condensation.
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