Question

Which phrase describes air pressure?

decreases with denser air
decreases as altitude decreases
equals mass divided by volume
decreases as a result of fewer air particles pushing down

Answer 1

decreases as a result of fewer air particles pushing down

Answer 2

The phrase which best describes air pressure is: decreases as a result of fewer air particles pushing down.

What is pressure?

Pressure can be defined as a measure of the force exerted per unit area of an object or physical body. Thus, it is usually measured in Newton per meter square and calculated by using this formula:

$P = \frac{F}{A}$

Where:

• P is the pressure.

• F is the force.

• A is the area.

The types of pressure.

In Science, there are different types of pressure and these include the following:

• Hydrostatic pressure

• Osmotic pressure

• Filtration pressure

• Atmospheric (air) pressure

In conclusion, air pressure is also referred to as atmospheric pressure and it generally decreases due to fewer air particles pushing down on the surface of planet Earth.

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