Curso de Inglês – Intermediário – Ouça e Repita – Lição 8 – Sound

Sound

It is easy to take sounds for granted. But do you really know what sound is? Sound is caused by something quivering back and forth. This shaking motion is called a vibration. Vibrations travel through the air and you hear them as sounds. You can hear many sounds at the same time because the air can carry many vibrations at one time. Different sounds are created according to how fast something vibrates. The faster it vibrates, the higher the sound. A slower vibration causes a lower sound.

Unpleasant sounds are called noise. Some noise can be harmful to your hearing. Loud noises, such as those from airplanes or machines, can even cause a hearing loss. But other sounds, such as music or talking, are not dangerous – just pleasant.

sound

Tradução

Som
É fácil não dar o devido valor aos sons. Mas você realmente sabe o que é o som? O som é causado por algo oscilando de um lado para o outro. Este movimento de oscilação é chamado de vibração. Vibrações viajam pelo ar e você os ouve como sons. Você pode ouvir muitos sons ao mesmo tempo porque o ar pode transportar muitas vibrações ao mesmo tempo. Diferentes sons são criados de acordo com a rapidez com que algo vibra. Quanto mais rápido ele vibra, mais alto é o som. Uma vibração mais lenta causa um som mais baixo.

Os sons desagradáveis são chamados de ruído. Alguns ruídos podem prejudicar sua audição. Ruídos altos, como os de aviões ou máquinas, podem até causar perda auditiva. Mas outros sons, como música ou uma conversa, não são perigosos – apenas agradáveis.

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