David from Think Science came to visit us on Thursday. He blew air into a long balloon. He aimed it one way and it fired the other way.

David used a hair dryer to put hot air into a large ‘balloon’ It rose up high into the air and eventually came down when the air cooled.

David removed the air between 2 suction cups so that they stuck together. Mrs Dallas and Mr McGlaughlin pulled as hard as they could. Unfortuantely they pulled too hard and the cups seperated throwing Mrs Dallas backwards! There is video evidence of this happening 🙂

David was able to lie on a bed of nails because he distributed his weight.

David calculated the weight of his head using Archimedes rule. His head weighed 4kg. Definitely do not try this at home!