Homeschoolingmama

I mentioned in my 'Cloud in a jar' post, how I'd recently made a list of exciting experiments to do, that required few items. After our successful 'cloud in a jar' we tried our very own lava lamp! This is such a simple experiment, I can imagine we have many lava lamps to come....so it's not quite a lamp but more like lava in a glass.  What you'll need Glass, we used a drinking glass (clear glass) Salt (approx 1tsp) Vegetable oil (to fill 1/4 of the glass) water (to fill approx 3/4 glass) Food dye (any colour - we used red) What to do Add 3/4 water to the glass, and add 4/5 drops of food dye (not too much as don't want a deep colour). Add the vegetable oil, which you will notice will float to the top (oil and water don't mix). Once all the oil as settled at the top, add about a teaspoon of salt.  You'll notice some of the oil clumping with the salt and sinking to the bottom of the glass. This oil will then rise...