What descriptors are used to classify the intensities of turbulence in a PIREP?

The classification of turbulence intensity in a Pilot Report (PIREP) is indeed described using the terms Light, Moderate, Severe, and Extreme.

Light turbulence refers to slight, erratic changes in altitude and/or attitude, which may cause slight changes in airspeed but are usually manageable for the pilot. Moderate turbulence involves greater intensity and can cause variations in altitude and more noticeable changes in airspeed that may require the pilots to exert moderate control forces. Severe turbulence is characterized by large, abrupt changes in altitude and attitude, making aircraft control challenging; passengers may be forced against their seatbelts, and unsecured objects may be dislodged. Finally, extreme turbulence results in the aircraft being violently tossed about, with very difficult control, potentially causing structural damage and posing significant risk to safety.

These well-defined categories provide pilots with crucial information about the turbulence they may encounter, helping them make informed decisions about their flight paths and ensuring passenger safety. The other answer choices do not align with standard aviation terminology for turbulence intensity as used in PIREPs, emphasizing the importance of using the proper classifications within the context of aviation protocols.