Strep throat Strep throat is a throat infection causing symptoms including a red sore throat with white patches. Hay fever Hay fever, an allergic reaction to outdoor pollens and molds, causes nasal congestion, itchy eyes, and more.
Air Density is the mass per unit volume of the air. For example, the standard air density at sea level is 1.225 kg/m 3 (0.076474 pounds/ft 3). Relative Density is the ratio of the actual air density to the standard sea level density, expressed as a percentage.
As a result, the amount of air in a particular box decreases when the air is heated if the air is free to escape from the box. In the free atmosphere, the air's density decreases as the air is heated. Pressure has the opposite effect on air density. Increasing the pressure increases the density.