A simple experiment involving a bottle, some cooking oil, food colouring, an Alka Seltzer and water hey presto home made lave lamp. Just don’t leave the Alka Seltzer on the table with the brats afterwards as a more interesting experiment is finding out if blue lava will erupt from the bottle if you stuff more in!…
Alka Seltzer (JUST ONE WILL DO IT!)
Fill bottle with two thirds oil. (HERES WHERE YOU’LL WISH YOU CHOSE A SMALLER BOTTLE
Top up the rest of the bottle with water to the top
Add a few drops of food colouring
Break up the Alka Seltzer and drop it into the bottle bit by bit. Hey Presto Lava Lamp.
STOP THERE, Kick the out of the Kitchen, clean up all of the spilt oil / food colouring, ignore shouting from other room, make coffee put ear plugs in.