Jet contrails are water condensation resulting from the rapid compression and decompression of the air around the wing as the airplane moves through the atmosphere.
The atmospheric conditions have to be just right for contrails to occur, and that is why you sometimes see contrails seem to wink off and on, as the airplane passes through drier air the contrails will stop.
The fact that jet airplanes' contrails form cirrus clouds suggests that they fly at altitudes where the temperature and humidity are conducive to contrail formation, typically above 20,000 feet. This indicates that jet airplanes generally fly at high altitudes, where the air is colder and less dense, allowing contrails to persist and spread out into cirrus clouds.
Airplane's contrails do not form clouds; they dissipate soon after they are formed.
Contrails are clouds that form behind airplanes when hot exhaust gases containing water vapor mix with cold air at high altitudes. The water vapor in the exhaust condenses into tiny ice crystals, creating a visible trail. Contrails can persist for a while depending on atmospheric conditions.
Those lines are created by aircraft flying at high altitudes releasing water vapor in the form of contrails, which are frozen water droplets condensing around particles in the exhaust. These contrails are most commonly seen behind jet engines on airplanes.
Contrails are long, artificial clouds that are man-made, sometimes trailing an aircraft. They are made most commonly by the water vapor in the exhaust of the engines of aircrafts. However, they can also be made from changes in the air pressure.
To be an airplane with jet engines? All jet airplanes leave contrails.
water vapor
contrails are "clouds" formed by the hot, humid air from plane/jet engines which mixes with water vapor high in the sky, then turning into ice crystals which then create contrails.
No. You would hear the jet as it passes over, but since light travels faster than sound you will have to look ahead of where you think the sound is coming from in order to see a jet. But if the contrails are already there, the jet would have come and gone already.
The jet contrails are exaust from the jet engines, which is mostly carbon dioxide and water vapour.
Contrails or vapour trails.
The streams that jet planes leave in the sky are called contrails. Contrails form when the hot, moist exhaust from the airplane engines mixes with the cold air at high altitudes, causing the water vapor to condense into ice crystals. Contrails can sometimes linger in the sky for a while, creating long white streaks behind the plane.
The fact that jet airplanes' contrails form cirrus clouds suggests that they fly at altitudes where the temperature and humidity are conducive to contrail formation, typically above 20,000 feet. This indicates that jet airplanes generally fly at high altitudes, where the air is colder and less dense, allowing contrails to persist and spread out into cirrus clouds.
Sulfur particulate and contrails from aircraft can produce high altitude pollution
Jet airplanes fly at high altitudes, typically between 30,000 and 40,000 feet. When their exhaust gases mix with cold air at these altitudes, the water vapor in the exhaust condenses and freezes, forming contrails which can then spread out and create cirrus clouds. This indicates that the contrails and cirrus clouds are forming at a high altitude where the air is cold enough for the water vapor to freeze.
If you are referring to the expansive wisps of what appears to be long cirrus clouds that trail behind jet engines in flight, then you are talking about condensation trails, or contrails. These are caused by the water vapour, a by-product of exhaust, rapidly saturating the surrounding air. At high altitudes, these tiny water droplets condense and remain suspended as ice crystals. Contrails can also be caused by the wingtip vortices of heavy aircraft at low speeds travelling through a high relative humidity environment. Although these contrails usually occur much closer to the ground, and do not remain suspended for an extended period of time, as do the contrails caused by exhaust.
The contrails are the result of 1200 degree jet exhaust being released into much, much colder ambient air.