So our prediction was correct - the heat of the sun had slightly faded the coloured card.
This morning we also started of a second experiment. We had been sent a postcard from Dora asking us to test bags and containers to see which would be the best for her to put her drinks in and for them to stay cold for a day at the beach.
So Mrs Tubby had frozen some bottles of water overnight and bought in some bags and containers. The aim of the experiment was to see which container kept the bottle of water frozen/cold the best. We tested; a cardboard box, a material bag, a paper bag, a plastic box and a cool bag.
Most of us predicted the cool bag would keep the water the coolest and a few of us predicted it would be the material bag that would be the best. We put a frozen bottle in each bag/container and left them for the day. This afternoon we took the bottles out...but when Mrs Tubby picked up the paper bag, it broke!
We noticed that the paper bag and broken/ripped because the ice had melted and made the bag wet. The cardboard box was still together but wet inside, the plastic box had a small pool of water from the ice melting, the frozen bottle in the material bag still had a large chunk of ice in, but had made the bag quite wet. However, the bottle of water in the cool bag was the bottle which still had the most ice in.
So our prediction was correct...it was the cool bag which is best to keep cold drinks in for a day at the beach!
We spoke about the foil lining in the cool bag and how it works as an 'insulator' to keep the cold in.
We then wrote our own postcards back to Dora to explain our findings and tell her we thought she should take a cool bag to the beach to keep her drinks cold!
Fantastic scientific work Year !