Mr Rose brought his water rocket with him this week. The bottle is half filled with water and then the air inside the water is compressed using a bicycle pump. When the clip holding the water bottle is released the air expands forcing the bottle rocket high up into the air. We took a video of this (which is below).
Miss Reyner supervised preparations.
We fired our rocket 3 times. This is the best film.
Later Mr Rose demonstrated how air expands when it is heated by adding boiling water to a bowl. A bottle was placed inside the bowl with a balloon on top to catch the expanded air.
As the air warmed up it expanded into the balloon.
Next, we tried this technique with a hot air balloon.
Again, as the air warmed the balloon began to rise.
It carried our little playmobil man up to the ceiling.
We learned that warm air rises and that it expands.
I loved that day it was awesome it was soooo fun!!!!!