Final answer:
Percussion is a medical technique used to assess the amount and distribution of fluids in the body by tapping the body surface and observing the resulting vibrations.
Step-by-step explanation:
Percussion is a medical technique used to assess the amount and distribution of fluids in the body. It involves tapping the body surface to create sound waves and observing the resulting vibrations. By listening to the sounds produced and feeling the vibrations, medical professionals can gather information about the presence of fluid in specific areas, such as the lungs or abdomen.