CPAER Meteorology Exam (2024) || Questions & Answers (Graded A+)
CPAER Meteorology Exam (2024) || Questions & Answers (Graded A+)
What is the primary driver of weather? - ANSWER - Uneven heating of the surface of the earth
In a standard atmosphere the environmental lapse rate is - ANSWER - 2...
CPAER Meteorology Exam (2024) ||
Questions & Answers (Graded A+)
What is the primary driver of weather? - ANSWER - Uneven heating of the surface of the earth
In a standard atmosphere the environmental lapse rate is - ANSWER - 2º per 1,000ft
The dry adiabatic lapse rate is - ANSWER - 3º per 1,000ft
The wet adiabatic lapse rate is - ANSWER - 1.5º per 1,000ft
A stable atmosphere occurs when the environmental lapse rate is - ANSWER - Shallow or negative
An unstable atmosphere occurs when the environmental lapse rate is - ANSWER - Steeper than both the wet and dry adiabatic lapse rates
A potentially unstable atmosphere occurs when the environmental lapse rate is - ANSWER - Somewhere between the dry an wet adiabatic lapse rates
ISA - ANSWER - 15º and pressure at sea level of 29.92" (1013.2hpa)
The average height of the tropopause is - ANSWER - 36,000ft
For every 1,000ft climbed, mercury drops approximately - ANSWER - 1"
Relative humidity - ANSWER - The amount of water in the air relative to the maximum it
can hold at given temperature and pressure
Dewpoint - ANSWER - The temperature at which condensation begins
Is humid air or dry air more dense? - ANSWER - Dry air
Convection - ANSWER - Vertical movement of air
Advection - ANSWER - Horizontal movement of air
Deposition - ANSWER - When gas changes *directly* to a solid
Isobars - ANSWER - Lines of constant/equal pressure
Isotachs - ANSWER - Lines of constant/equal wind velocity Contour lines - ANSWER - Lines where the altitude at which a specified pressure occurs is constant
Cloudy/rainy weather is associated with - ANSWER - Low pressure system (ascending air)
Which way does air circulate in a low pressure system? - ANSWER - Counter-clockwise
Warm/sunny weather is associated with - ANSWER - High pressure system (descending air)
If you stand with your back to the wind in the northern hemisphere, the low will be on your - ANSWER - Left
Below 3,000ft wind typically blows ____ isobars - ANSWER - Across
Squall (wind) - ANSWER - Rapid increase in wind speed lasting for a minute or longer
Downburst - ANSWER - Strong localized downdraft from a thunderstorm
Microburst - ANSWER - Downburst lasting less than 5 minutes with horizontal extent of 2nm or less
Macroburst - ANSWER - Downburst lasting between 5-20 minutes with horizontal extent
of 2nm or more
Clouds are formed when - ANSWER - Air containing moisture is cooled to saturation resulting in the water condensing as liquid droplets or ice crystals
High cloud - ANSWER - Base above 20,000ft (Cirrus, Cirrostratus, cirrocumulus)
Middle cloud - ANSWER - Base between 6,500ft and 20,000ft (altostratus, altocumulus, altocumulus castellanos)
Low cloud - ANSWER - Base below 6,500ft (Stratus, nimbostratus, fractostratus, cumulus)
What are clouds of vertical development? - ANSWER - Cumulus clouds that grow vertically into towering cumulus or cumulonimbus
Few clouds cover - ANSWER - 0.1 to 2/8ths of the sky
Scattered clouds cover - ANSWER - 3/8ths to 4/8ths of the sky
Broken clouds cover - ANSWER - 5/8ths to 7/8ths of the sky
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