Question

One atmosphere of pressure is defined as:

1) 1 ata
2) Each 33 feet of depth in sea water
3) Each 34 feet of depth in freshwater
4) All answers are correct

Answer 1

One atmosphere of pressure is defined as 1 ata, or the pressure at every 33 feet of depth in sea water, or every 34 feet of depth in freshwater, all of which accurately represent 1 atmosphere of pressure.

Step-by-step explanation:

One atmosphere of pressure is defined as the pressure exerted by a column of air extending from sea level to the top of the atmosphere. In different units and contexts, it is equivalent to 1 ata, which is the ambient pressure at sea level; the pressure experienced every 33 feet of depth in sea water, due to the weight of the water above; and similarly, every 34 feet of depth in freshwater. Thus, when considering pressure in relation to depth of water or sea water, all the provided answers are correct representations of one atmosphere.

The pressure at sea level averages to 1.01 × 10⁵ Pa (pascals), which is equivalent to 1 atm. This parallel between the pressure of the atmosphere and the pressure under water is useful for various applications such as diving, engineering, and science.