As a plane passes overhead, the cold air allows the sound of its engine to travel down to the ground “without losing nearly as much of the sound as it would in warmer air,” he adds. Without losing any ...

The ocean of air that makes up our atmosphere is composed of gases, including nitrogen, oxygen, carbon dioxide and trace amounts of argon, helium and hydrogen. The molecules from all those gases ...

That's why there's no sound in space. For sound to travel it needs air molecules to vibrate. In deep space there's no air. We call this a vacuum. You can muffle or reduce sound by using thick ...

The water gas molecules will occupy all the space inside the can since the air molecules have been pushed out. The hot gas molecules are the same pressure as the air outside the can. When the can is ...

As solid ice, the molecules are further apart, arranged in an orderly pattern, and not able to slide past each other. Nitrogen is the most abundant gas in our air. Molecules of nitrogen are barely ...

meaning there is less space between the air molecules. In warm air, those molecules “move around more freely and have more wiggle room between each other,” James says. That wiggle room also ...