Question id 473 - Meteorology - ATPL - Airline Transport Pilot license

The surface wind usually has its direction parallel to the front
The weather conditions that it originates is a combination between those of an intense cold front and those of a warm and very active front
The warm air moves at approximately half the speed of the cold air
The surface wind usually has its direction perpendicular to the front

Training tests and timed exam simulations ATPL - Airline Transport Pilot license