Fundamental’s of Weather and
Atmospheric Science ,Questions
and Answers
The temperature at which saturation occurs - ANS>>dew point
Condensed water vapor that forms on surfaces such as twigs, leaves, and blades of
grass as the temperature drops. - ANS>>dew
The dew becomes ____ dew when the air temperature drops below freezing. -
ANS>>frozen dew
Dew is more likely to form on nights that are ____ and _____ than on nights that are
_____ and _____. - ANS>>clear and calm, cloudy and windy
Cloudy, windy weather that inhibits rapid cooling near the ground and the forming of
_____ often signifies the approach of a _____ storm system. - ANS>>dew, rain-
producing
The name for dew-point when the temperature drops below freezing. - ANS>>frost-point
When water vapor changes directly into ice. - ANS>>Deposition
When air cools to the dew point, the relative humidity becomes _____% and the air is
saturated. Continued cooling condenses some of the vapor into tiny ____ _____ -
ANS>>100, cloud droplets
A volume of air about the size of an index finger contains between _____ and ____
particles. - ANS>>1000 and 150,000
Particles which serve as surfaces on which water vapor can condense. -
ANS>>condensation nuclei
Particles ranging from 0.2 to 1um - ANS>>large nuclei
Particles with a range exceeding 1um - ANS>>giant nuclei
Condensation nuclei most favorable for producing clouds have a radii of ____um -
ANS>>0.1 and are called cloud condensation nuclei
Provide the the major source of cloud condensation nuclei in the marine atmosphere. -
ANS>>sulfates
, Means "water-seeking". eg: salt - ANS>>hygroscopic
Means "water-repelling". eg: oils, gasoline, waxes - ANS>>hydrophobic
Haze, fog, and clouds will form at relative humidity near or below ____% due to the
mixture of particles in the air. - ANS>>100%
A layer of dust or salt particles suspended above a region. - ANS>>haze
The thin white veil across the horizon is due to ____ - ANS>>haze
When the visibility lowers to less than 1km, and the air is wet with countless millions of
tiny floating water droplets, the wet haze becomes a cloud resting near the ground,
which we call _____ - ANS>>fog
Fog that forms over cities is _____ than fog that forms over the oceans with eh same
water content due to the greater number of nuclei. - ANS>>thicker
Two ways in which fog forms: - ANS>>1. by cooling- air is cooled below its saturation
point (dew point)
2. by evaporation and mixing- water vapor is added to the air by evaporation, and the
moist air mixes with relatively dry air
_____ and _____ are the primary means for cooling the nighttime air near the ground. -
ANS>>radiation and conduction
Fog produced by the earth's radiational cooling is called ______ fog - ANS>>radiation
fog (ground fog)
Fog that forms as relatively wars moist air moves over a colder surface that cooled
mainly by radiational cooling. - ANS>>Advection-radiation fog
Fog that forms as moist air flows up along an elevated plain, hill or mountain. -
ANS>>upslope fog
Fog produced when sufficient water vapor is added to the air by evaporation, and the
moist air mixes with relatively drier air.
The two common types are _____ fog, which forms when cold air moves over warm
water, and ______ fog, which forms as warm raindrops evaporate in a cool air mass. -
ANS>>Evaporation (mixing fog)
steam, frontal
A cloud resting on the ground composed of water droplets, ice crystals, or a
combination of both. - ANS>>Fog
Atmospheric Science ,Questions
and Answers
The temperature at which saturation occurs - ANS>>dew point
Condensed water vapor that forms on surfaces such as twigs, leaves, and blades of
grass as the temperature drops. - ANS>>dew
The dew becomes ____ dew when the air temperature drops below freezing. -
ANS>>frozen dew
Dew is more likely to form on nights that are ____ and _____ than on nights that are
_____ and _____. - ANS>>clear and calm, cloudy and windy
Cloudy, windy weather that inhibits rapid cooling near the ground and the forming of
_____ often signifies the approach of a _____ storm system. - ANS>>dew, rain-
producing
The name for dew-point when the temperature drops below freezing. - ANS>>frost-point
When water vapor changes directly into ice. - ANS>>Deposition
When air cools to the dew point, the relative humidity becomes _____% and the air is
saturated. Continued cooling condenses some of the vapor into tiny ____ _____ -
ANS>>100, cloud droplets
A volume of air about the size of an index finger contains between _____ and ____
particles. - ANS>>1000 and 150,000
Particles which serve as surfaces on which water vapor can condense. -
ANS>>condensation nuclei
Particles ranging from 0.2 to 1um - ANS>>large nuclei
Particles with a range exceeding 1um - ANS>>giant nuclei
Condensation nuclei most favorable for producing clouds have a radii of ____um -
ANS>>0.1 and are called cloud condensation nuclei
Provide the the major source of cloud condensation nuclei in the marine atmosphere. -
ANS>>sulfates
, Means "water-seeking". eg: salt - ANS>>hygroscopic
Means "water-repelling". eg: oils, gasoline, waxes - ANS>>hydrophobic
Haze, fog, and clouds will form at relative humidity near or below ____% due to the
mixture of particles in the air. - ANS>>100%
A layer of dust or salt particles suspended above a region. - ANS>>haze
The thin white veil across the horizon is due to ____ - ANS>>haze
When the visibility lowers to less than 1km, and the air is wet with countless millions of
tiny floating water droplets, the wet haze becomes a cloud resting near the ground,
which we call _____ - ANS>>fog
Fog that forms over cities is _____ than fog that forms over the oceans with eh same
water content due to the greater number of nuclei. - ANS>>thicker
Two ways in which fog forms: - ANS>>1. by cooling- air is cooled below its saturation
point (dew point)
2. by evaporation and mixing- water vapor is added to the air by evaporation, and the
moist air mixes with relatively dry air
_____ and _____ are the primary means for cooling the nighttime air near the ground. -
ANS>>radiation and conduction
Fog produced by the earth's radiational cooling is called ______ fog - ANS>>radiation
fog (ground fog)
Fog that forms as relatively wars moist air moves over a colder surface that cooled
mainly by radiational cooling. - ANS>>Advection-radiation fog
Fog that forms as moist air flows up along an elevated plain, hill or mountain. -
ANS>>upslope fog
Fog produced when sufficient water vapor is added to the air by evaporation, and the
moist air mixes with relatively drier air.
The two common types are _____ fog, which forms when cold air moves over warm
water, and ______ fog, which forms as warm raindrops evaporate in a cool air mass. -
ANS>>Evaporation (mixing fog)
steam, frontal
A cloud resting on the ground composed of water droplets, ice crystals, or a
combination of both. - ANS>>Fog
