Question

Why are solid particles required for cloud formation?

Answer 1

The vapor rises until it reaches a low enough temperature and pressure to condense water vapor into water droplets and form a cloud. When vapor condenses into liquid or solid particles, it loses some of its energy to the air.
Hope this helps

Answer 2

Hi!

Solid particles are usually required for cloud formations because the clouds need the solid particles for the water to condense on.

I hope this helps! (Sorry if it was a little short)