Tornadoes are extreme weather events found in nature and come in a variety of shapes and sizes. Waterspouts are known to form over bodies of water, often in tropical areas close to the equator. These tornadoes are connected to a large cumulus or cumulonimbus cloud. They are shaped like funnels which appear as twisting pillars of air. There are other better-known types of tornadoes such as the landspout and the multiple-vortex tornadoes. 86. Which title best summarizes the main idea of the passage? A. Types of Tornadoes C. Multiple-Vortex Tornadoes B. Landspout Tornadoes D. Cumulus and Cumulonimbus