Q: What type of cloud is often described as having a lenticular or lens-shaped appearance and is associated with mountain waves?

Arab Weather - The cloud that is often described as having a lenticular or lens-shaped appearance and is associated with mountain waves is the cumulonimbus cloud or lenticular clouds. These clouds form when moist air flows over terrain such as mountains, creating air waves. As the air moves upward through these waves, it cools and condenses, creating these distinctive clouds.