Irish stepdance traditional step dance in Munster. This style is largely performed on the balls of the feet with toes pointed outwards. Competitive dancers are judged on posture, timing, rhythm and execution, which in practice means a rigid torso, rapid and intricate footwork, and legs and feet crossed over each other, with knees close together. Irish stepdances can be placed into two categories. Solo stepdances, which are danced by a single dancer, and group stepdances, which are coordinated with 2 or more dancers. "Reel", "slip jig", "hornpipe", and "jig" are all types of Irish stepdances and are also types of Irish traditional
Types of volcanic eruptions "Ultra-Plinian." Subglacial and phreatic eruptions are defined by their eruptive mechanism, and vary in strength. An important measure of eruptive strength is Volcanic Explosivity Index (VEI), an order of magnitude scale ranging from 0 to 8 that often correlates to eruptive types. Volcanic eruptions arise through three main mechanisms: There are two types of eruptions in terms of activity, explosive eruptions and effusive eruptions. Explosive eruptions are characterized by gas-driven explosions that propels magma and tephra. Effusive eruptions, meanwhile, are characterized by the outpouring of lava without significant explosive eruption. Volcanic eruptions vary widely in strength. On the one extreme