# What Is the Speed of Sound?

The speed of sound in air is 343 metres per second at a temperature of 20 degrees Celsius. The speed of sound is usually described as the velocity of sound through a mechanical medium such as a solid or a fluid.
The speed of sound varies depending on the temperature, pressure, and density of the medium through which the sound waves travel. For dry air at sea level at 68° F, the speed of sound is 767 miles per hour, or 1235 km/h
The speed of sound varies depending on altitude, temperature and the medium through which it travels. For example, at sea level in a standard atmosphere, at a temperature of 59-degrees Fahrenheit (15 Celsius), sound travels 761 miles per hour (1,225 km/p/h).
The speed of sound can be calculated by getting the time a sound wave takes to cover a certain distance unit. This may be influenced by outside elements such as temperature and the medium through which the sound wave passes through. This is due to different particle composition of different mediums.
The speed of sound is the rate of travel of a sound wave through an elastic medium. In dry air at , the speed of sound is . This equates to , or about one kilometer in three seconds and about one mile in five seconds.
The speed of sound is 343 meters per second. This is about one mile in five seconds. The speed of sound is how fast a sound wave can travel through a medium such as air.
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