Question

The atmospheric pressure at any location on Earth's surface is due to the:_________

1. combined exhaling of all living creatures.
2. evaporation of water from the oceans and seas.
3. the heating of the entire atmosphere by the Sun.
4. the weight of the air above that location.

Answer 1

4. The weight of the air above that location.

Step-by-step explanation:

According to Hydrostatics, the pressure is directly proportional to fluid density, gravitational constant and height of the fluid column. That is to say:

`\Delta P = \rho_(air) \cdot g \cdot \Delta h`

Hence, the correct answer is option 4.