Thunderstorms produce some of the most dangerous weather elements in aviation, and you should avoid _____ them.
A. penetrating
B. to penetrate
C. penetrate
D. penetrated
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There are three conditions necessary to create a thunderstorm: air that has a ______ towards instability, some type of lifting action, and relatively high moisture.
A. tendency
B. attendance
C. expectation
D. anticipation
There are three conditions necessary to create a thunderstorm: air that has a tendency towards _______, some type of lifting action, and relatively high moisture content.
A. inability
B. instability
C. stability
D. unstable
Thunderstorms progress three definite stages: cumulus stage, mature stage and _______ stage.
A. dispersing
B. dispelling
C. dissipating
D. dispatching
When conditions permit, you should ______ thunderstorms.
A. avitate
B. navigate
C. communicate
D. curcumnavigate