Question

Which correctly lists three characteristics that are used to describe air?

a) Altitude, density, radiation
b) Density, radiation, mass
c) Mass, pressure, density
d) Pressure, altitude, radiation

Answer 1

The correct answer is c) Mass, pressure, density. Air has mass, exerts pressure, and has a density that decreases with altitude.

Step-by-step explanation:

The correct answer is c) Mass, pressure, density. These three characteristics are commonly used to describe air.

1. Mass: Air has mass, which means it takes up space and has weight.
2. Pressure: Air exerts pressure on objects due to the force exerted by the molecules in the air.
3. Density: Air density refers to how closely packed the air molecules are. The density of air decreases with altitude, meaning it becomes less dense as you go higher.