YourStory | First-Person K12 Education

What are contrails?

Water vapor trails left by aircraft at high altitudesClouds made of ice crystals in the polar regionsThunderstorm clouds that produce heavy rainfallCirrus clouds that form during warm weather

Under what conditions do contrails most commonly form?

High humidity and low temperatures at flight altitudeClear skies and high temperaturesHeavy precipitation and thunderstormsStrong winds at ground level

Which type of cloud can contrails eventually become?

Cumulonimbus cloudsStratus cloudsCirrus cloudsNimbostratus clouds

Assessment

What are contrails?

Under what conditions do contrails most commonly form?

Which type of cloud can contrails eventually become?