Today a teacher and a student made a giant balloon. They cut open trash bags to make plastic sheets. They taped the sheets together to make the balloon. They used a fan to fill up the balloon. They tied a plastic string to the balloon.
When the sun was shining on the balloon, it got hot and flew up into the air. It went up about 20 or 30 meters. I was very impressed. They wanted to attach a camera to the balloon, but it was too heavy.
The balloon was leaky, so it got heavier and heavier as the air leaked out. Some other students noticed the balloon outside the window. After that, they couldn’t concentrate on their class.
They wanted to use black bags because they would get hot in the sunshine and rise faster. Unfortunately, most garbage bags are clear now. I want to make my own balloon now.
Have you ever made something interesting like this? What was it?
君の為に 