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 Form 1 Geography Online Lessons on Weather

In this lesson we are to discuss about the types of cloud

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Answer Text:
Clouds
-Are a mass of tiny droplets or ice particles formed when water vapour condenses.
Three Cloud Forms
1. Cirroform
-Thin and wispy clouds composed of ice crystals.
2. Stratiform
-Appear as greyish sheets covering most of the sky and are rarely broken into units.
3. Cumuliform
-Are massive rounded with a flat base and limited horizontal extent and billow upwards to great heights.
Basic Cloud Types
1. Stratus Clouds
-Are found in layers, are flat in shape and resemble fog.
2. Nimbus Clouds
-Are dark at the base and sometimes white at the sides and cause rain and thunderstorms.
3. Cirro-cumulus
-Are white clouds consisting of white ice crystals.
4. Nimbostratus
-A rain cloud which is dark grey and spreads over the sky in low uniform layers.
5. Cumulus Clouds
-Clouds with a flat horizontal base, massive, rounded and less horizontal extent.
6. Alto cumulus
-High clouds composed of ice crystals which indicate fair weather.


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