How to make a lava lamp

Materials

• Clear jar 
• Water 
• Oil 
• Food colouring 
• Salt 

Fill the clear jar with water ⅔ of the way.


Pour oil on top of the water carefully until you have a layer on inch thick.


Put in a dab of food colouring.

Sprinkle the salt slowly into the Water.


Add more salt to make bigger bubbles.