会跳舞的粉笔灰
Chalk dust that can dance
星期四的科学课上，科学老师带我们做了一个有趣的实验，名字叫做：会跳舞的粉笔灰。
On Thursday's science class, the science teacher took us to do an interesting experiment called 'Dancing Chalk Ash'.
我刚听到“会跳舞的粉笔灰”，心里就产生疑问：粉笔灰也会跳舞？不过这个疑团很快解开了。
As soon as I heard 'Chalk Ash that Can Dance', I had a question in my heart: Can Chalk Ash also dance? However, this mystery was quickly resolved.
老师拿着一把直尺和两支粉笔，用直尺在粉笔上刮啊刮，刮出许许多多的粉笔灰。
The teacher held a ruler and two pieces of chalk, and used the ruler to scrape and scrape on the chalk, scraping out a lot of chalk dust.
然后，老师拿出一个粉色的圆盒子，拿刻刀把盒子的底部给刻了下来。老师问同学们：“谁有A4纸和透明胶，借我用一下。”一位同学把A4纸和透明胶借给老师。
Then, the teacher took out a pink round box and used a carving knife to carve the bottom of the box. The teacher asked the students, 'Who has A4 paper and transparent adhesive? Can you lend me some?'. ”A classmate lent the teacher A4 paper and transparent adhesive.
接着，老师把A4纸粘在盒子底部，给盒子翻个身，让底部朝上，再把扩音器放在盒子下面，将麦克风留在外面。
Next, the teacher sticks A4 paper to the bottom of the box, flips the box over with the bottom facing up, and places the amplifier under the box while leaving the microphone outside.
到了最关键的一步。老师说道：“谁对着麦克风说话试试，很有趣的。”
We have reached the most crucial step. The teacher said, "Try speaking into the microphone, it's very interesting
同学们都争先恐后地举起手。有的同学还大声喊道：“让我来！让我来！”
Classmates eagerly raised their hands. Some students even shouted loudly, 'Let me do it! Let me do it!'
最终，幸运儿诞生了，就是彭梦飞同学。
In the end, the lucky one was born, and that was Peng Mengfei.
彭梦飞对着麦克风唱起了歌。坐在前排的同学激动地喊道：“粉笔灰跳舞了！粉笔灰跳舞了！”
Peng Mengfei sang into the microphone. The classmate sitting in the front row exclaimed excitedly, "Chalk Ash is dancing! Chalk Ash is dancing
我听到后赶紧站起来，踮起脚尖，头努力地向前伸着，看到粉笔灰随着音调的高低跳起了舞，一会儿高，一会儿低……
After hearing this, I quickly stood up, tiptoed, and stretched my head forward with effort. I saw the chalk ash dancing with the pitch, sometimes high and sometimes low
同学们都很惊讶。老师解释道：“粉笔灰之所以会跳舞，是因为声音的振动。声音越大，粉笔灰就‘跳’得越高；声音越小，粉笔灰就‘跳’得越低。”
The classmates were all surprised. The teacher explained, "The reason why chalk dust can dance is because of the vibration of sound. The louder the sound, the higher the chalk dust 'jumps'; the quieter the sound, the lower the chalk dust' jumps'
这真是一次有趣的实验，不仅让我们明白了粉笔灰跳舞的科学原理，还体会了科学的神奇！
This is truly an interesting experiment, which not only helped us understand the scientific principles of chalk and ash dancing, but also allowed us to experience the magic of science!