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近年来,物理中考题常以生活现象或小实验为情境,考查声现象。下面从各地中考或模拟题中选取几个关于声现象实验题,供同学们学习时参考。一、探究方法、目的例1如图1所示,用悬挂着的乒乓球接触正在发声的音叉,乒乓球会多次被弹开。这个实验是用来探究()。A.声音能否在真空中传播B.声音产生的原因C.音调是否与频率有关D.声音传播是否需要时间
In recent years, the physical examination questions often use the phenomenon of life or small experiment as a context, test the sound phenomenon. Below from around the exam or simulation questions in the selection of a few sound phenomena on experimental questions for students to learn reference. First, the exploration method, the purpose of Example 1 As shown in Figure 1, with suspended pingpong touch sounding fork, table tennis will be repeatedly bounced. This experiment is used to explore (). A. Whether the sound can be transmitted in a vacuum B. The reason for the sound C. Whether the tone is related to the frequency D. Whether the sound transmission needs time