Knowledge world

Knowledge world is a library of articles, project ideas, interesting videos and interviews of all the five K-12 stakeholders , activities for Students, activities for Teachers and Parents to use with children and Project Ideas that Students can use for their project work. Use search or filters to find your desired knowledge resource.

Articles Videos Interviews Hands-On Activities Fun Activities Project Ideas

Create cloud in the bottle


So, you have learned how clouds are formed. Now, you can create clouds at home.


  • One plastic bottle with cap (1 liter bottle will work)
  • Foot pump (Make sure that the rubber stopper is there)
  • Rubbing alcohol
  • Safety glass
  • Water


  • Wear your safety glass first.
  • Pour some water in the bottle and swirl it.
  • Now insert the rubber stopper into the bottle.
  • Pump for four-five times. While pumping, make sure that the stopper is not coming out of the bottle.
  • After pumping, take the stopper out.
  • You will notice the formation of some clouds.
  • Use rubbing alcohol instead of water if you want to notice more visible clouds.

Image Credit:

Next Education