sentence: Cold fronts can also move up to twice as fast as warm fronts.
sentences_before: A 'cold front' is a meteorological word that is used to describe the movement of a cooler airmass into an area of warmer air. University of Illinois. The air with greater density moves under the less dense warmer air, lifting it, which can cause a line of showers and thunderstorms, or a squall line to form when there is sufficient moisture. This upward motion causes lowered pressure along the cold front.
concept_name: cold front
headings: Cold front
categories: Meteorology