Assertion: cold front's air | /r/HasProperty | dense
Facets:
value: relatively
type: DEGREE
value: in the winter
type: TEMPORAL
value: really
type: DEGREE
value: during the winter months
type: TEMPORAL
value: often
type: DEGREE
value: as cold air
type: OTHER
Source sentences:
text: The cold air is extremely dense, which provides it with the capability of moving ahead quickly and plow the mass of warm air that is in front of it.
text: And especially during the winter months, the cold air that a warm front is attempting to displace is often heavy and dense and is stubborn to dislodge.
text: As it advances, often quite rapidly (50 to 65 km [30 to 40 miles] per hour), the cold air, which is relatively dense, undercuts the displaced warm air, forcing it to rise.
text: As it advances, often quite rapidly (50 to 65 km [30 to 40 miles] per hour), the cold air, which is relatively dense, undercuts the displaced warm air, forcing it to rise.
text: A warm front means that warm air is drawing closer and is rising up over cold air, which is caused by warm air being lighter or not as dense as cold air; replacing cooler air along the Earth’s surface.
text: A cold front means cold air is approaching and is lingering underneath warmer air, which is caused by cold air being much more heavy or dense than the warm air rising above it.
text: in the winter the air is really dense