a quick, involuntary inhalation that follows a spasm of the diaphragm and is suddenly checked by closure of the glottis, producing a short, relatively sharp sound. Usually, hiccups. the condition of having such spasms: She got the hiccups just as she began to speak.
Mount Hood is part of the Cascade Volcanic Arc, which formed as a  result of the convergent boundary between the North American Plate  and the Juan de Fuca Plate.Edit.ransform boundary: when two plates grind past each other. Convergent boundary: when the two plates collide.
Earth's outer layer, the crust, is divided into a set of large moving plates. The lines where they meet are called plate boundaries. There are three main types of plate boundary: divergent, convergent and transform.Plates move away from one another at divergent boundaries. This happens at mid-ocean ridges. Plates move towards one another at convergent boundaries; one plate is forced below another in a process called subduction.Earthquakes and composite volcanoes are common at this type of boundary. Plates move past on another at transform boundaries.arth's outer layer, the crust, is divided into a set of large moving plates. The lines where they meet are called plate boundaries. There are three main types of plate boundary: divergent, convergent and transform.