Awesome Scientists

Last week we had a visit from two scientists, Esther and Matt.  They came to do some experiments about sound.  When we got to Room 1 we were put into three groups.


In the first group we had to make a bongo drum with a tube and a balloon.  We had to stretch the balloon over the top of the tube.  It was quite tricky because the balloons were a bit small.  When you got it over it sounded like a drum.

In the next group we had to cut a straw and then when we blowed into it it made a sound.  It was the vibrations that made the sound.  I took mine home and mum said that if I didn't stop blowing it, she would take it off me.

Did you know that you can whisper through a balloon and the person listening on the other side can hear you?






Matt had some liquid nitrogen that was really, really cold.  It was so cold that he froze a banana.  He also poured some on to a balloon and all the air went out of the balloon.  As the balloon warmed back up, the air came back into the balloon.  It was really cool.

Esther and Matt made some ice-cream for us with the liquid nitrogen.  It had chocolate chips in it.  It was really nice and creamy.  Esther said it was better than real ice cream because the liquid nitrogen freezes it so fast that it doesn't get a chance to get icy, like other ice cream.  It was really yummy.