Prior to the discovery of atmospheric pressure, the operation of siphons was explained by the principle that:
A) Water is naturally drawn into a region of least pressure.
B) The water in siphons is supported by demons.
C) Nature abhors a vacuum.
D) Water rises in an open tube by capillary action.
E) Higher pressure results in a greater volume of flow.

Question

Quizplus · Accepted Answer

The principle that nature abhors a vacuum was commonly used to explain the operation of siphons prior to the discovery of atmospheric pressure. The idea was that the empty space in the siphon tube created a vacuum, which nature would attempt to fill by drawing water up and over the hump and out the other end.

Prior to the Discovery of Atmospheric Pressure, the Operation of Siphons