When a warm air mass moves into a region occupied by a cold air mass, the contact zone is called
A) a cold front.
B) a warm front.
C) a stationary front.
D) an occluded front.
Question 2
Lower temperatures can be expected
A) behind a stationary warm front.
B) behind an advancing warm front.
C) ahead of an advancing cold front.
D) behind an advancing cold front.