I must admit that I am not a big fan of the commercial side of Valentine’s day but I have no problem with the idea of telling someone you love just how much they mean to you. When I get to couple the sentiment with some science experimenting
It is a simple and easy Fun Friday experiment today – how to make an ocean in a bottle
All you need for this experiment is…
- an empty clear plastic bottle (a 1 or 2L soft drink bottle will work fine)
- cooking oil (any kind)
- Blue food colouring
- A funnel
What you do…
- Using the funnel fill the plastic bottle about one third full with water
- Add a few drops of food colouring to colour the water blue
- Using the funnel again fill the bottle with the oil (you will notice that the water and oil will quickly settle into two separate layers)
- Close the lid tightly on the bottle and turn the bottle on its side
- The water layer will be on the bottom of the bottle
- If you rock the bottle from side to side you can create a wave like motion of the water, looking just like a little ocean in a bottle; see what kind of waves you can make!
How does it work…
This is a good experiment to explain density
What is Density?
Density is the mass of an object per unit volume. A bit of a mouthful but this is how I explained it to my own children today….…imagine you have a pebble and a marshmallow of the same size and shape… which one do you think is heavier?
My three year old got this straight away… “the pebble of course Mum” (with a “silly question”