气球是生活中一种常用的娱乐产品,在物理实验中巧妙地运用它可以达到意想不到的效果。一、声音在液体中传播先将手机装入气球内,密封好。然后把它慢慢浸没于水槽中,并让手机的屏幕正对着学生。用另外一个手机对其进行拨号,手机开始振铃。这样,学生既可以看到手机屏幕的亮光,又可以听到从手机发出的声音。如图1所示。这就证明了声音可以在液体中传播。 Balloon is a commonly used entertainment products in life, skillfully use it in physics experiments can achieve unexpected results. First, the sound spread in the liquid First mobile phone into the balloon, sealed. Then slowly submerge it in the sink, and let the phone's screen is facing the students. Dial it with another phone and the phone starts ringing. In this way, students can not only see the light of the phone screen, but also hear the sound from the phone. As shown in Figure 1. This proves that the sound can spread in the liquid.