The REAL Science Behind Those Giant Shadow Lines in the Sky! Contrails form when hot exhaust gases from aircraft engines, which contain water vapor, mix with the cold, low-pressure air at high altitudes, typically below -40°C. The water vapor in the exhaust cools rapidly, condensing into tiny water droplets or ice crystals when the surrounding air is saturated with moisture and the temperature drops below the dew point or frost point. If the temperature is low enough, the condensed water vapor f

424 reactions · 46 shares | Physics Grade 12 || Chapter 1 — Lesson 1 Fasalka cusub oo Form 4 ah ayaa bilowday ⬇️ Morning : 9:30Am Afternoon : 2:00Pm, 3:00Pm And 4:00Pm | SMART College | Facebook