Why does sounds travel faster in warm air than in cool air?

Answer 1

The average mean speed of the molecules of air is faster in warm air than on cool air. Sound is transferred by collisions of molecules. Therefore sound waves will travel faster on warm air because collisions of molecules of air in warm air is greater.

Answer 2

Sound travels faster through warm air than through cold air. This is to be expected because the faster-moving molecules in warm air bump into each other more often and therefore transmit a pulse in less time. For each degree rise in temperature above 0 degrees C, the speed of sound in air increases by 0.6 meters per second. In water, sound travels about four times as fast as it does in air, while in steel, the speed of sound is about fifteen times as great as in air."

Answer 3

Perhaps this is because at a higher temperature, the molecules have a higher average speed.

- I thought that if something was more dense then tings are harder the travel through.

For example, glass is more dense than air and sound travels slower through glass than air.

Answer 4

Sound actually travels faster in colder air than it does in warmer air.

Sound waves need a medium in which to travel. The closer the molecules (air in this case), the easier it is for the sound wave to be transferred from one group of molecules to the next. In warm air, the molecules collide more often, thus enabling sound to be transmitted.

This is why sound travels over four times faster in water than it does in air.

Answer 5

Because the molecules are less dense and they vibrate faster letting sound travel faster

Answer 6

Less air friction

Cold air = more friction(due to the molecules being compacted)

Warm air = less friction(due to the molecules expanding)

Answer 7

because cold air is denser and heavier than warm air so sound travels through warm more faster

Answer 8

the air molecules are moving faster