This is Me and Kyra's Experiment - Hot & Cold
For this experiment you need blue and rose pink or red food dye, a plastic card which you can cut out of the bottom of a plastic bowl, a jar of hot water and a jar of cold water, a skewer and a dish or bowl to catch any mess you make.
First you fill up the jars, one hot and the other cold.. You dip the skewer in the food colouring three times in each colour, and then into the water. The rose pink or red food dye will go in the hot water and the blue food dye into the cold water. After that you put the jar with the hot water on/in the dish and put the plastic card on top of the jar with cold water. Make sure that the rim of the jar is clear through the plastic. After that quickly, but carefully, flip it over and sit it on top of the jar with hot water. Then slowly, and again, carefully slide the plastic out from between the two jars. Now the colours should be mixing into a purplish indigo.
That was the first way. Now refill the jars with clean water, one hot and one cold. Put the food dye in. But this time put the jar of cold water in the dish, and put the plastic card on the jar of hot water. After that flip the jar of hot water, and put it on the jar of cold water. Slowly and carefully slip the the plastic out, now it shouldn't have mixed. The hot water shouldn't have gone through and the cold water should've stayed where it is.
This experiment involves Air Resistance because the steam from the hot water is like air. Also Geothermal Energy because of the hot water. And last, but not least, Balanced Forces because the hot and cold water are leveled. The atua (god) would be Ruaumoko, he is a maori god that was never born from Papatuanuku (earth). So he is still underground and causing all of the earthquakes and volcanoes because he is angry and his siblings for turning Papatuanuku over.
When the hot water is on top of the cold water it doesn't mix. We think that it's because of the steam from the hot water is acting like a barrier so it doesn't go through.
When the cold water is on top of the hot water it mixes because there isn't any steam barrier to stop it from falling through.
- Paige
