我们生活在一个充满声音的世界里.优美动听的音乐可以陶冶人的性情,令人生厌的噪声影响人的工作休息.可以说人类从呱呱坠地时起无时无刻不与声音打交道.那么声音是怎样产生和传播的呢?振动产生声音声音是由物体的振动产生的,一切正在发声的物体都在振动.如,人在说话时,声带在振动;昆虫飞行时翅膀迅速振动发出声音:蟋蟀是两翅膀互相摩擦产生振动发出声音的:大风天气听到呼呼的响声,是由气体振动产生的.可以用各种方法使物体振动发声.例如,一张纸可以用摩擦、揉搓、指弹等方法,使其本身振动发出声 We live in a world full of sounds. Beautiful and pleasant music can cultivate people’s temperament, annoying noise affect people’s work and rest.We can say that since the birth of mankind from time to time all the time not to deal with the voice.So how is the sound and Vibrating sound Vibrato sound is produced by the vibration of the object, all the sounding objects are vibrating, for example, the vocal cords vibrate when the person speaks; the wings vibrate rapidly when the insect is flying: The crickets are the two wings of each other Friction Generates Vibrations: Vibrations A whirring noise is heard when it comes to whirring, which is caused by gas vibrations. Vibrations can be made by various methods. For example, a sheet of paper can be rubbed, rubbed, It vibrates itself