This hot air, cold air science activity is a great experiment to watch the effects of hot air and cold air on balloon.
What you will need?
- 2 containers, one filled with hot tap water and other with cold water;
- 1 balloon;
- 1 plastic bottle.
Place the balloon over the mouth of the empty plastic bottle.
What happens to the balloon when placed in hot water?
Wait a few minutes and notice the balloon start to inflate and expand.
What happens to the balloon when placed in cold water?
Wait a few moments and notice that the balloon start to deflate and contract.
Science activities and experiments are a great opportunity to make connections between real life experiences such as the hot air balloon ride.
Giorgia, a young girl of our class is now very passionate about balloons, as well as her mates. She asked her mum to take her to Mondovi, a town located 35 km form the school (it’sin the region of Piemonte, Northern Italy). In Mondovi, on the weekend of 4th-5th-6th January there was the 31st Festival of Hot Hair balloons.
She took many pictures and spent a lovely day with her family!
The attached video is from Youtube: the balloons “dance”with the music of the Queen. Fantastic!
The children of our school are so passionate about hot-air balloons now and their interest is growing day by day.
The size and lightness of each ballon have triggered their imagination.
So words and colors joined together to create intriguing “calligrams” (beautiful poems, from the ancient Greek).
Moreover, lots of pages of newspapers became a fleet of wonderful hot-air balloons ready to fly over our heads.
Our project has made the news in an Italian newspaper…
On Thursday 20 December 2018, in the afternoon, the children met Professor Gemma Gallino, scientific popularizer of the “Mathesis Association” who also had a collaboration with the University of Turin.
In a simple and engaging way, she has entertained the young students with experiments with the air and on the principle of Archimedes.
She even made a tea bag fly!
She showed a lot of pictures of the flying machines of Leonardo da Vinci and the first hot balloons of the Montgolfier brothers.
Last but not least, even to greet the arrival of the Christmas holidays, Gemma and our teacher lit a paper lantern and let it rise to the sky. After a while, it desappeared , followed by the excited and happy voices of the children still excited for the interesting lesson!
As Confucius wrote:
“Tell me and I will forget, show me and I may remember; involve me and I will understand.”