AB Meteorology and Weather Observation Flashcards
6 cards from real AB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 AB Meteorology and Weather Observation flashcards as text
What weather change typically accompanies the passage of a cold front?
Answer: Sudden squalls and sharp wind shift
Cold front passage brings sudden squalls, a sharp clockwise wind shift, brief heavy rain, then rapidly clearing skies.
What is a meteorological 'trough'?
Answer: An elongated area of low pressure
A trough is an elongated region of relatively low atmospheric pressure that can bring unsettled weather and wind shifts.
At what Beaufort force number is wind classified as hurricane force?
Answer: 12
Beaufort Force 12 designates hurricane-force winds of 64 knots or greater with exceptionally high seas.
What is the primary cause of advection (sea) fog?
Answer: Warm moist air flowing over cooler water
Advection fog forms when warm, moist air moves over colder water, cooling the air to its dew point and causing condensation.
What does a steady barometer generally indicate about upcoming weather?
Answer: Continued settled weather
A steady barometer indicates stable atmospheric pressure, which generally signals continued fair or settled weather conditions.
A 'veering' wind shifts in which direction?
Answer: Clockwise (e.g., S to W)
A veering wind shifts clockwise in direction (e.g., from south to west) and in the Northern Hemisphere often signals improving weather.