What is the speed of sound? Detailed answer

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What is the speed of sound? Detailed answer

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What is the speed of sound?

If we hear any sound, then there must be a vibrating object nearby that is vibrating. Sounds come from vibrating objects.

But the sound has to travel somewhere. Something must carry it from source to destination. This something is called "environment". Anything can serve as a medium - air, water, objects, even earth. The Indians put their ears to the ground to hear distant sounds.

No environment - no sound. If a vacuum is created in some volume, sound cannot propagate in it. This is because sound travels in waves. A vibrating object transmits its vibration to neighboring molecules or particles. There is a transfer of motion from one particle to another, which leads to the appearance of a sound wave.

The propagation medium of sound waves can be various materials - wood, air, water; therefore, the propagation speed of sound waves must be different. If we are talking about the speed of sound, we must ask: in what medium?

The speed of sound in air is about 335 m/s. But this is at 0°C. As the temperature rises, the speed of sound also increases.

Sound travels faster in water than in air. At a temperature of 8 °C, its propagation speed is about 1435 m/s, or about 6 km/h. In metal, this speed reaches about 5000 m/s, or 20 km/h.

You probably think that a strong sound has a higher speed than a weak one, but this is not so. Its speed does not depend on its height (high or low). The speed of sound depends on the medium of its propagation.

You can conduct an experiment yourself comparing the speed of sound in different environments. Go into the water and hit each other with two stones. Now go under the water and tap those stones again. You will be surprised that sound travels better in water than in air.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

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Western winds usually bring rain in summer, snow and thaw in winter. East and northeast winds bring cold in winter, often with clear skies, and dry and sunny weather in summer. The south wind almost always brings warmth and sunshine.

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Revealed the secret of dog friendliness 27.07.2017

Scientists from Oregon and Princeton jointly figured out the genetic basis of the friendliness of domestic dogs.

At the first stage, the authors compared the behavior of 18 different domestic dogs - both purebred and half-breeds - and 10 wolves living in captivity and raised by people in close contact with them (in one of the research institutes located in Indiana, USA). It turned out that dogs are much friendlier than wolves, even "domestic" ones.

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