Atmospheric pressure is the force (per unit-area) perpendicular to a unit-area of planetary surface, as determined by _________.
- A. Mass of vertical column of atmospheric gases
- B. Mass of horizontal column of atmospheric gases
- C. Weight of vertical column of atmospheric gases
- D. Mass of vertical and weight of horizontal of atmospheric gases
Explanation
Atmospheric pressure is caused by the weight of the vertical column of air above a surface area. Mass alone is not a force, whereas weight is the gravitational force acting on that mass.
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