The Mercalli scale measures the intensity of these from I to XII

The length of this South American water boa may exceed 30 feet The lightest wood used commercially, it's used to build model airplanes & some kinds of buoys The long leaves of the milfoil plant are especially suited to absorb this gas underwater The lutz, a type of jump in this sport, is probably named for Swiss athlete Gustave Lussi The minneola is the best-known variety of the tangelo; Minnehaha is his best gal in a Longfellow poem The mission statement of this school says it's located In...Indianapolis, one of America's most livable cities The modern racing of these dogs began in 1907 when a stuffed rabbit skin was attached to a motorcycle The most common one used by artists is probably the X-acto