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 does a rapidly falling barometer indicate?
Answer: Approaching storm
A rapidly falling barometer indicates an approaching storm or rapidly deteriorating weather conditions.
What is the Beaufort scale used to measure?
Answer: Wind force and sea state
The Beaufort scale is an empirical measure that rates wind force from 0 (calm) to 12 (hurricane) along with the corresponding sea state.
A 'backing' wind shifts in which direction?
Answer: Counterclockwise (e.g., S to E)
A backing wind shifts counterclockwise in direction and often signals deteriorating weather or an approaching frontal system.
Which cloud type typically appears first ahead of an advancing warm front?
Answer: Cirrus
Cirrus clouds, high and wispy, are the first to appear far ahead of a warm front and signal its approach 24–48 hours out.
What is the approximate wind speed range for Beaufort Force 6?
Answer: 22–27 knots
Beaufort Force 6, called a 'strong breeze,' corresponds to winds of 22–27 knots with large waves beginning to form.
According to Buys-Ballot's Law in the Northern Hemisphere, if you stand with the wind at your back, where is the low-pressure center?
Answer: To your left and slightly ahead
Buys-Ballot's Law states that in the Northern Hemisphere, standing with the wind at your back places the low-pressure center to your left and slightly ahead.