How come we get mist as clouds normally float and how is it that they can change altitude?

Question: How come we get mist as clouds normally float and how is it that they can change altitude?
- Keywords:
  altitude,
  clouds
Asked by anon-181555 on 8 Jun 2018.
- Joanne Sharpe answered on 8 Jun 2018:
  
  Mist is the same as a cloud you would see in the sky – tiny water droplets in the air. Mist forms when warmer water vapour is rapidly cooled so that it condenses in the air. This can happen when warmer air over water suddenly passes over the land which is cooler. It is just like when you breathe out on a cold day – the water in your breath condenses when it hits the cold air and looks like you’re breathing out steam.
- Lauren Burns answered on 11 Jun 2018:
  
  That is really interesting! Thanks Joanne! 🙂

Question: How come we get mist as clouds normally float and how is it that they can change altitude?