Tornadoes come in many shapes and sizes, but they are typically in the form of a visible condensation funnel originating from the base of a huge storm cloud, whose narrow end touches the earth and is often encircled by a basal cloud of debris and dust.
Soda jerk. A soda jerk (or soda jerker) is a personâtypically a youthâwho operates the soda fountain in a drugstore, often for the purpose of preparing and serving flavored soda water or an ice cream soda. This was made by putting flavored syrup into a specially designed tall glass, adding carbonated water and, finally, one or two scoops of ice cream.
Contractions are called positive myoclonus; relaxations are called negative myoclonus. When falling asleep, it is common for people to experience a type of myoclonic jerk known as a hypnic jerk. Hiccups are also a kind of myoclonic jerk specifically affecting the diaphragm. Myoclonus is a symptom of a disease in which a muscle or group of muscles suddenly starts twitching or jerking. Some common examples of myoclonus are: 1  Hiccups. 2  a sudden violent jerking or twitching motion when one is startled; or, 3  the twitching of an arm or leg as you begin to fall asleep.