What are Clouds?

Kam’s cloud question is about their colour. He wants to know why clouds are white.  So, I thought it’s probably wise to find out about what clouds are, before we look at why they are white.

How Clouds Form

Water vapour and salt particles
Water vapour condensing on Ocean salt particles:NASA

Clouds form when water vapour in the air condenses into water droplets or ice crystals.

The atmosphere contains microscopic (tiny, tiny, tiny) dust particles, called aerosols.

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