ASA Instrument Test Prep Chapter 1 – Weather Exam with verified
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detailed answers ||
A characteristic of the stratosphere is
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relatively small changes in temperature with an increase in altitude
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The average height of the troposphere in the middle latitudes is
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37,000 feet ||
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Which feature is associated with the tropopause?
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Abrupt change in temperature lapse rate
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A jet stream is defined as wind of
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50 knots or greater
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The strength and location of the jet stream is normally
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weaker and farther north in the summer
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,The primary cause of all changes in the Earth's weather is
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variation of solar energy received by the Earth's regions
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How much colder than standard temperature is the forecast temperature at 9,000
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feet, as indicated in the following excerpt from the Winds and Temperature Aloft
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Forecast?
FT 6000 9000 || ||
0737-04 1043-10 ||
(Do the math) || ||
7 Degrees C
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If the air temperature is +8 degrees C at an elevation of 1,350 feet and a standard
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(average) temperature lapse rate exists, what will be the approximate freezing level?
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(Do the math) || ||
5,350 feet MSL || ||
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A common type of ground or surface based temperature inversion is that which is
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produced by ||
ground radiation on clear, cool nights when the wind is light
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, The most frequent type ground- or surface-based temperature inversion is that
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produced by ||
radiation on a clear, relatively still night || || || || || ||
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What feature is associated with a temperature inversion?
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A stable layer of air
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A temperature inversion will normally form only
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in stable air
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Which weather conditions should be expected beneath a low-level temperature
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inversion layer when the relative humidity is high? || || || || || || ||
Smooth air and poor visibility due to fog, haze, or low clouds
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What causes surface winds to flow across isobars at an angle rather than parallel to
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the isobars? ||
Surface friction ||
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detailed answers ||
A characteristic of the stratosphere is
|| || || || ||
relatively small changes in temperature with an increase in altitude
|| || || || || || || || ||
|| || ||
The average height of the troposphere in the middle latitudes is
|| || || || || || || || || ||
37,000 feet ||
|| || ||
Which feature is associated with the tropopause?
|| || || || || ||
Abrupt change in temperature lapse rate
|| || || || ||
|| || ||
A jet stream is defined as wind of
|| || || || || || ||
50 knots or greater
|| || ||
|| || ||
The strength and location of the jet stream is normally
|| || || || || || || || ||
weaker and farther north in the summer
|| || || || || ||
|| || ||
,The primary cause of all changes in the Earth's weather is
|| || || || || || || || || ||
variation of solar energy received by the Earth's regions
|| || || || || || || ||
|| || ||
How much colder than standard temperature is the forecast temperature at 9,000
|| || || || || || || || || || || ||
feet, as indicated in the following excerpt from the Winds and Temperature Aloft
|| || || || || || || || || || || || ||
Forecast?
FT 6000 9000 || ||
0737-04 1043-10 ||
(Do the math) || ||
7 Degrees C
|| ||
|| || ||
If the air temperature is +8 degrees C at an elevation of 1,350 feet and a standard
|| || || || || || || || || || || || || || || || ||
(average) temperature lapse rate exists, what will be the approximate freezing level?
|| || || || || || || || || || ||
(Do the math) || ||
5,350 feet MSL || ||
|| || ||
A common type of ground or surface based temperature inversion is that which is
|| || || || || || || || || || || || || ||
produced by ||
ground radiation on clear, cool nights when the wind is light
|| || || || || || || || || ||
|| || ||
, The most frequent type ground- or surface-based temperature inversion is that
|| || || || || || || || || || ||
produced by ||
radiation on a clear, relatively still night || || || || || ||
|| || ||
What feature is associated with a temperature inversion?
|| || || || || || ||
A stable layer of air
|| || || ||
|| || ||
A temperature inversion will normally form only
|| || || || || ||
in stable air
|| ||
|| || ||
Which weather conditions should be expected beneath a low-level temperature
|| || || || || || || || || ||
inversion layer when the relative humidity is high? || || || || || || ||
Smooth air and poor visibility due to fog, haze, or low clouds
|| || || || || || || || || || ||
|| || ||
What causes surface winds to flow across isobars at an angle rather than parallel to
|| || || || || || || || || || || || || || ||
the isobars? ||
Surface friction ||
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