Water & Buoyancy Science For Kids, Montessori Physics Part 2
Welcome to part 2! We are having great fun exploring water!
This experiment is very popular, but it does happen to be in our Science Book of Water. We created a diver with a pen cap, a little bit of modelling clay, a two litre bottle, and water.
The air trapped in the cap keeps it buoyant - when you squeeze the bottle it creates pressure, and forces more water into the cap - it becomes less buoyant thus sinking to the bottom.
Xander thought it was pretty cool that he could control the depth of his little cap diver.
Our book gives a great explanation, and chats about the function of submarines.
This is a great layout for this experiment if you have not tried it.

