Precipitation (Part Two)

By: Elizabeth

Cloud Questions (last two questions)

How are clouds classified?

Clouds are classified by the form and height of the cloud.

Describe how clouds are named.

Clouds are named using Latin words and the name depends on what the cloud looks like and the height and width of it. The color will even produce a different name for the cloud to be called.

Sleet

What is it?

Sleet is a form of precipitation consisting of ice pellets, and often mixed with rain or snow.


How does it form?


As the snow falls through the warmer air, it either melts of partially melts into raindrops. As the melted snow then falls through the cold layer of the air (the outer layer of the Troposphere, where it is the coldest), it re-freezes. This then forms ice pellets (a.k.a. sleet) before hitting the ground.

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Hail

What is it?

Hail is pellets of frozen rain that fall in showers from cumulonimbus clouds.

How does it form?

Hail forms when the updrafts of a thunderstorm are strong enough to carry water droplets back up into the air to freeze. This freezing point is way back up in the cumulonimbus cloud. This freezing process forms a hailstone, which can grow depending on how much water freezes to it. Eventually, the hailstone gets to heavy for the updraft to hold it any longer and it falls to the ground.

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