Is air more dense at low or high temperatures and how does it affect sound travel?

Answer 1

air is more dense in low temperatures, and it decreases the speed of sound.

Answer 2

Air is LESS dense at high temperatures because it has more energy and needs more room to spread out.

Sound travels faster through more dense materials than less dense ones. If you bang a steel beam the sound waves moving through the beam will reach the end of the beam before the sound waves moving through the air do.

Therefor sound should travel slightly faster through cold air.

Answer 3

air is more dense at lower temperatures. Sound travels faster in more dense media.

Answer 4

Air expands as it is heated, so it is more dense at low temperatures. I think sound would travel better when it is less dense (at warmer temperatures).

Answer 5

Air is less dense. Sound will travel further because there are fewer molecules for the sound to hit and slow down on.

Answer 6

Think of a hot air baloon and it will be obvious that high temperature air is less dense.
Sound travels faster in hotter air:
http://hyperphysics.phy-astr.gsu.edu/hbase/sound/souspe.html

Answer 7

low temptress make for denser air denser air travels father because it pushes more air molecules, the thinner the air the less air it moves or the less it travels.

Answer 8

low and travels faster in denser air