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声音的现象

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声音的现象

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我好累iiiiii

Created by

Yunia Pankek
Yunia Pankek
Malaysia

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声音的现象
 

声音的现象Online version

我好累iiiiii

by Yunia Pankek
1

有三种方法防止 1。发出声 2。传播声音中弱噪音的干扰 3。接受噪音处

2

柔软，光滑的表面，声波会反射

3

温度高，声音速度会加快

4

声音在气体传播最快，固体传播最慢

5

利用回声发明了声内

6

噪音有规则振动

7

响度 -声音的强弱 -由振动幅度决定 -振动幅度越大，响度越大=声音大

8

人不靠声带的振动来发声

9

声音被发射是叫原声

10

声音的传播要介质（固体，液体，气体）

11

坚硬，粗糙的表面，声波会吸引

12

振动方向和传播方向在同一个直线是横波

13

音调 -声音的高低 -由频率决定 -振动次数越多，频率越高，音调越高

14

物体的振动而产生声音

15

声源是最初发出振动的物体

16

振动方向和传播方向相互垂直是纵波

17

音色 -一样物体发出的声音特征 -不同的材料发出方法，音色不同

 
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