okay a couple.

Question

Air Masses move from ________ (rain,winds)

A _______ front moves back and forth over the same area. (warm,statinary)

At ________ fronts, warmer air gradually rises above cooler air.(warm,cold)

Answer 1

winds move air.
stationary fronts do not change much.
cold fronts move cold air, low to the ground. Warm humid air rises over, and rain (or snow or sleet) forms.