When air masses meet each other head on, how is this referred to and what air movements will follow?

Question

Question Quiz BPL Gas - Balloon Pilot License - Meteorology

QuizVDS · Accepted Answer

Convergence resulting in air being lifted

QuizVDS · Answer

Divergence resulting in air being lifted

QuizVDS · Answer

Convergence resulting in sinking air

QuizVDS · Answer

Divergence resulting in sinking air

Id 239 - BPL Gas - When air masses meet each other head on, how is this referred to and what air movements will follow?