Question

prepare list of sound heard and the sorces from which they might have originated​

Answer 1

Question ⤵️

prepare list of sound heard and the sorces from which they might have originated

Answer ⤵️

THE PHYSICAL ELEMENTS OF SOUND

Our ability to hear is crucial for providing information about the world around us. Sound is produced when an object vibrates the air around it, and this vibration can be represented as a wave that travels through space. For example, if a branch falls off a tree and hits the ground, the air pressure around the branch changes when it hits the earth and, as a result, the vibration of the air produces a sound originating from the collision. One thing that many people do not realize is that sound waves have physical properties and are therefore influenced by the environment in which they occur. In the vacuum of space, for instance, sounds cannot occur because, in a true vacuum, there is nothing to vibrate and cause a sound wave. The two most important physical qualities of sound are frequency and amplitude. Frequency is the speed at which a sound wave vibrates, and it determines the pitch of a noise. Higher frequency sounds have a higher pitch, like a flute or a bird chirping, while lower frequency sounds have a lower pitch, like a tuba or a large dog barking. The amplitude of a sound wave can be thought of as the strength of the vibrations as they travel through the air, and it determines the perceived loudness of the sound. As you can see in Figure 1, when the peak of the sound wave is smaller, the sound will be perceived as quieter. If the peak is larger, then the sound will seem louder. It might even help to think of sound waves like waves in an ocean. If you stand in still water and drop a pebble near your legs, it will cause a small ripple (a tiny wave) that does not affect you much. But if you stand in the ocean during stormy weather, the large incoming waves may be strong enough to knock you down! Just like the size and strength of water waves, the size, and strength of sound waves can have a big effect on what you hear.

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