Yesterday the senior classes went to a science roadshow. Each class went one by one. The science roadshow was at Tamaki College auditorium. The reason why we had this science roadshow was to learn more about our ‘Topic,Bigger,Better,Faster,Stronger’.
When we got there we had to wait outside until a lady named Laura came out and got us. When we went inside we had to sit down on the chairs. After a while they were talking to us about the temperature, how it rises and how the heat goes down. They gave us a few examples.
One of the examples they showed us was how fuel can blow up. They got a piece of paper and put the tip of it on fire then put it into a container but it didn't blow up. It didn't blow up because it had no oxygen. Then they lit a candle and sprayed fuel on the candle then there was a huge fire on it. This happened because there was heaps of oxygen around the lit candle.
There was another experiment that they showed us. It was liquid nitrogen. They also had this little metal stick with a hoop at the end of it. They also needed a volunteer. The volunteer had to put safety equipment on and put a little ball through the hoop and it dropped through the little hoop. Then the lady put the hoop thing into the liquid nitrogen for a few minutes. When she pulled the hoop thing out, the volunteer had to drop the same ball through the hoop and see if it dropped through. When she dropped the ball it didn't go through because when she dipped it into the liquid nitrogen, it decreased in size.
1 comment:
Hi Kezia
The science roadshow had many interesting exhibits. I liked how you explained the reason why there was a huge fire when the kerosene was sprayed onto the candle, as opposed to the paper being dropped into the container. Well done!
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