The following levels of turbulence can be encountered during flight are:

• A. All of the above
• B. Moderate
• C. Light
• D. Severe

Answer: (A)

Turbulence comes in different intensities, and each level can occur during a flight under the right conditions. Light turbulence causes small, momentary bumps; you can usually continue the flight with minor changes in altitude or attitude. Moderate turbulence is more noticeable, with larger bumps and more noticeable movement in the cabin, often requiring the crew to secure items and the seatbelt sign to be on. Severe turbulence involves strong, abrupt changes in altitude or attitude and can cause noticeable disruption and potential injuries if unbuckled or unsecured. Because all of these levels can be encountered, the best choice is the one that includes light, moderate, and severe turbulence, since turbulence can occur at any of these intensities.