Question

Buildings are more dense than the surrounding air. This means that they have more _____ per volume than the air and will stay on the ground instead of floating up into the atmosphere.
mass

heat

pressure

temperature

Answer 1

Answer: Option (a) is the correct answer.

Explanation:

Density is defined as the mass present in a substance in per unit volume.

Mathematically,        Density = $\frac{mass}{volume}$

Since, density is directly proportional to mass. Hence, more is the mass present per volume of a substance more will be its density. As a result, denser will be the object.

Therefore, we can conclude that buildings are more dense than the surrounding air. This means that they have more mass per volume than the air and will stay on the ground instead of floating up into the atmosphere.

Answer 2

The correct answer would be that they have more MASS per volume than air.