Answer:
The Nature of Sound Waves
Are you one of those people who likes to shout, 'Echo!' whenever you're inside a cavernous building? I think it's fun to experiment with echoes. Lots of people like to shout when they're standing under a bridge, inside a parking garage, or at the bottom of a canyon.
We know that echoes are simply the reflection of sound from the rigid walls of buildings and natural formations. But what can echoes tell us about sound waves? Can we learn how sound travels from one place to another by studying the echo phenomenon?
Before we get into that, let's review what a sound wave is. We've learned already that sound waves are longitudinal waves. That is, the particles in the medium vibrate in a direction parallel to the movement of the wave. Longitudinal waves are tougher to visualize than transverse waves. So let's use the sound of a guitar string as an example.
Temperature actually increases the speed of sound, because warmer particles generally move at a faster rate. Scientists have derived a special formula for finding the speed of sound in dry air. It works for most of the temperatures found on Earth. The formula is v = 331 + (0.61)T, where v is the speed of sound, and T is the temperature.
For this formula, speed must be measured in meters per second, and temperature in degrees Celsius. You can see by this formula that an increase in temperature, or T, would cause an increase in speed, or v. If the temperature was 20° C, then the speed of sound in dry air would be about 343 meters per second. If the temperature rose to 30° C, then the speed would increase to 349 meters per second.
Explanation:
Hope it helps
Make me as a brainliest
