## Does amplitude depend on wavelength?

Amplitude corresponds to the loudness of the sound. [BL][OL] Since sound at all frequencies has the same speed in air, a change in frequency means a change in wavelength. The amplitude X is completely independent of the speed of propagation vw and depends only on the amount of energy in the wave

## At which temperature will sound travel fastest?

Does air temperature affect the speed of sound? Kim Strong, a professor of physics at the University of Toronto says the answer is yes, in fact sound travels faster when the air is hotter. At 25 C, the speed of sound is 1,246 kilometres per hour

## Does temperature affect sound waves?

Temperature is another condition that affects the speed of sound. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy and can vibrate faster and allow sound waves to travel more quickly.

## What happens to frequency as temperature increases?

(a) For a given sound, as the temperature increases, what happens to the frequency? There is no change in frequency. The speed of sound increases by about 0.5 m/s for each degree Celsius when the air temperature rises.

## Does temperature affect wavelength?

A higher temperature will cause the wavelength of peak emission to be at a shorter wavelength. >> As temperature increases, the amount of emitted energy (radiation) increases, while the wavelength of peak emission decreases.

## What is the effect of higher temperature on the pitch of the sound?

Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly. The speed of sound in room temperature air is 346 meters per second.

## Why do instruments go sharp in the heat?

Because the speed of sound in air increases with rising temperature, brass and woodwind instruments tend to play sharp when the air is hot and flat when the air is cold. A simple demonstration of this effect is shown using PVC pipes

## Why do instruments go flat when cold?

From a basic understanding of physics, metal expands in heat and contracts in cold. Also, when one tubes an instruments pitch to be higher or lower, they make the instrument smaller to get pitch higher, and larger to make it lower. Logically, a cold metal instrument should go sharp, but it goes flat instead.

## Why a musician must return a stringed instrument if its temperature changes?

Temperature can affect the sound of an instrument in a variety of ways, which are different for each instrument. Warm weather also tends to expand instruments and thus alter their ability to withstand tension, which again changes their interaction with a musician.

## What makes the air warm?

When air becomes hot it is because it is absorbing energy in the form of heat. The absorbed energy makes the molecules in air move and expand, therefore decreasing the airs density