It's heavier. Warming gases makes them less dense. That is why hot air balloons work.
A cold front forms when a cold air mass advances and replaces a warmer air mass. As the cold air moves into an area previously occupied by warm air, it pushes the warm air upward, creating instability and potentially leading to the development of thunderstorms and other severe weather.
a cold front forms by cold air mass pushes under a warm air mass
Warm air naturally goes up/rises and cold air has to make a current where it can go until it reaches a warm current which is under the warm air.
Yes, that process is known as a cold front. Cold air is denser than warm air, so when a cold air mass moves in, it wedges under the warmer air, causing the warm air to rise and create weather changes like thunderstorms and cooler temperatures.
Cold air is denser than warm air, so it tends to sink beneath the warm air along a cold front. As the cold air pushes underneath the warm air, it forces the warm air upward, creating lift and leading to the formation of clouds and precipitation. This results in the characteristic weather patterns associated with cold fronts, such as thunderstorms and sudden drops in temperature.
Cold air is denser thus heavier.
There is really nothing interesting about cold fronts. Cold air is overtaking warm air. Since cold air is denser than warm air, cold air goes under a warm air mass.
The cold air pushes under the warm air.
Cold air is denser than warm air. Which allows it to slide under that warm air and displace it.
Cold air is denser than warm air, so it sinks below warm air due to gravity. This sinking motion causes cold air to flow under warm air, leading to the familiar pattern of cold air near the ground and warm air above it.
A cold air mass comes in under a warm air mass.
a cold front
Cold air is more dense than warm air and therefore heavier
A cold front forms when a cold air mass advances and replaces a warmer air mass. As the cold air moves into an area previously occupied by warm air, it pushes the warm air upward, creating instability and potentially leading to the development of thunderstorms and other severe weather.
A warm air mass rises over a cold air mass at a warm front because warm air is less dense than cold air. This results in the warm air mass being forced to rise and cool, leading to the formation of clouds and precipitation at the boundary of the two air masses.
Not Normally, usually when warm fronts heat the air up, when cold fronts come around, that is the front that normally is associated with clouds and rain. When warm and cold air collide, that's when the development of storms come around.
The front you are referring to is called a cold front. Cold air is denser than warm air, so when a mass of cold air moves underneath warm, moist air, it lifts the warm air rapidly, leading to the formation of clouds and potentially precipitation.