What do you call the long streams left in the sky by jet planes?

Question

school work bleah

Answer 1

Jake - in the vernacular, CONTRAILS. This is condensation trails or vapor trails. It is caused by water vapor crystallizing in thin cold air at altitude.  There are supposed to be other more ominous trails left in the sky by aircraft too. There are CHEMTRAILS. Indistinguishable from contrails, these chemical trails are said by some to be some kind of covert testing of the effect of various secret chemicals on the public at large. The lunatic fringe has even suggested the chemtrail phemomenon is part of an experiment in mass-control of  public behaviour, a kind of chemical mind control perhaps, or a way to reduce aggression in violent crowd-contol situations.

Some people claim to have suffered dire effects after observing chemtrails but, as you may have guessed, the government deny any involvement, and nothing has yet been proved.

Answer 2

they are called a vapor trail

Answer 3

Beautiful, like clouds in the sky.

Answer 4

DEFINITELY vapor trails!

The hot engine against the cold air.

Answer 5

Contrails. They are actually condensed water vapour from the engines

Answer 6

Smoke trails?

Answer 7

"Contrails," which is an abbreviated way of saying "condensation trails."  Rapid pressure changes as the air flows over the wings causes moisture to condense out of the air and form long streamers of vapor behind the plane.

Answer 8

Contrails--liquid or solid water condensation trails.

[(Invisible) water vapor is what they were before condensing].

Answer 9

Contrails.

Answer 10

Jetstream?

Answer 11

Contrails or vapour trails are condensation trails and artificial cirrus clouds made by the exhaust of aircraft engines or wingtip vortices which precipitate a stream of tiny ice crystals in moist, frigid upper air. Being composed of water, the visible white streams are not air pollution. However, vapour trails or contrails generated by engine exhaust are inevitably linked with typical fuel combustion pollutants.

Answer 12

vapour trails. Smokey bits coming out of the back.