Density in air?

Air density is the mass of air per unit volume, which changes by temperature, humidity, and elevation. Changes in air density will change its pressure. At mean sea level and 20°C, air has a density...

Convert: 1kg/m3 to g/cm3 1kg=1000g 1m3=100*100*100=1000000cm3 therefore: 1000g/1000000cm3 = 0.001g/cm3 4200kg/m3 * 0.001g/cm3 = 4.2g/cm3

Yes! Warm air is less dense, which is why warm air rises. Cold air is more dense so that's why it sinks.

True, that's what we are told by meteorologists. Density in turn is a function of temperature. Hot air is lighter / less dense than cold air. Anticyclones / high pressure areas are made of cold air,...

As air pressure pressure decreases with altitude, so does the densite of air.