资源描述
液体传声的演示
液体传声得演示
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【器材】
薄塑料袋,闹铃,水桶,水。
【制作方法】
把发声得闹铃放在密封得塑料袋中,将塑料袋和闹铃一起浸没在桶里得水中。
【使用方法】
把发声得闹铃放在密封得塑料袋中,将塑料袋和闹铃一起浸没在桶里得水中。将耳朵紧贴水桶,能听到声音,说明液体能够传播声音。
【注意事项】
将塑料袋和闹铃一起浸没在桶里得水中时,用细线吊起来,并且中间不能触及其她物体。
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