Wow! What an exciting day we have had today. It was the official start to our 'National Science and Engineering Week' activities and we had 'Mad Science' come to kick start our week. They started with an assembly where we learnt all about the Bernoulli's principle. Bernoulli's principle is a principle in hydrodynamics which says the pressure in a stream of fluid is reduced as the speed of the flow is increased. We looked at lots of experiments with this including Mr. Curtis trying to show his lung power to finding out how a hovercraft works. It was so much fun.
We then had a classroom workshop where we got to find out all about molecules and how they differ in solids, liquids and gases. Have a look at our video of the differences between the molecules in solids, liquids and gases.
We then got to explore dry ice. we found out that it is made up of carbon dioxide. It turns from a solid to a gas and misses out the liquid stage. Very cool. We got to touch the vapour and had lots of fun mixing it with washing up liquid. We thought when you mixed warm water with the dry ice it was just like a witch's cauldron.
We tested balloons. We put some dry ice in a balloon and by shaking it it released all the carbon dioxide. Then we blew up a balloon with air. We found out that carbon dioxide is heavier than air because when we released the balloons at the same time, from the same height, the balloon with the carbon dioxide in it landed first. We enjoyed today so much. Lots of us now want to be scientists when we grow up and we want to create science experiments!