What would happen if you tried to blow a soap bubble in very cold weather? Would you have to hit it to break it? These questions happened to me on a cold winter day. It was too cold to play in the snow, but it was a perfect time to experiment(实验) with blowing frozen bubble.
To blow frozen(结冰的) bubbles, I used dish washing soap. I chose a place out of the wind, and blew bubbles in the same way I always do. I watched to see what would happen. Here's what I learned.
If the temperature is low enough, the skin of the bubbles frosts over(结霜), becoming cloudy instead of clear. And what about the rainbow turning over you see in soap bubble? The rainbow colours still stay even when the bubble frost, but they don't turn over any more. The bubbles still stay in the air. They don't fall to the ground any faster than they would on a warm summer day.
When these frozen bubbles break, they don't turn into small water drops as summer bubbles do. They turn into flashing rainbow confetti(碎屑) and move slowly to the ground. Sometimes a frozen bubble will roll across the snow without breaking. If nothing disturbs(打扰) the bubble, it may stay there for a long time. Sometimes I can catch a bubble and hold it until the beat of my hand makes it pop.
I learnt another thing about blowing frozen bubbles. It's so interesting that I want to try it again next year.
