Hot Balloon

Now we are making a hot balloon with the same group members from the second egg lander. we had straws , a few birthday candles and a large bag as the material. In this mission we must make a hot balloon and make it fly up for a certian amount time and height.
We spent lots of time to take to tapes off fromm the egg lander, we used those straws to make the design Mr. Chung drew on the board. It is a simple and useful design for hot balloon. We spent lots of times deciding how many candles we should use for the hot balloon and the length of the straws. Because the bag was really big and heavy, so we cut it and use one part of it. Therefore, the number of canldes we used was only 4.To prevent the candles burn the bag, we made a long base and put all candles at the center of the hot balloon. We used tapes to secure straws with bag and the candles on the straws. And this is our final product.

Isn't this amazing? LOL! Anyways, this didn't work. In fact, none of our hot balloons worked in our class. When the candles were lighted, the bag intumesced but did not rise from the ground. I think the bag is too small and there was not enough hot air to carry up such weight of candles and straws, and maybe we did not use enough candles.

For Adjustion, I will use larger and lighter bag, and maybe more candles.