Lewith Tankers Exam 3 Practice Test 2026 – Complete Prep Guide

Cavitation is the formation of vapor-filled bubbles in a liquid when local pressure drops below the liquid’s vapor pressure, followed by their collapse as the bubbles move into higher-pressure regions. The destructive aspect—what makes cavitation particularly problematic—is the implosive collapse of those bubbles. When they collapse, they release intense energy in the form of shock waves and microjets, which can erode surfaces, create noise and vibration, and cause damage to components like pumps and valves.

Among the options, the statement that emphasizes the collapse causing damage best captures the harmful consequence of cavitation. Bubble formation is part of the process, but the damaging effects come from the rapid collapse. The other choices don’t fit as well: air entrainment isn’t the core mechanism of cavitation, bubble formation alone doesn’t describe the destructive outcome, and a temperature rise isn’t the primary mechanism involved.