The following table shows examples of variables, operational definitions, and values. Variables, operational definitions, and values. The last definition in the table (number of hairs on the left thumb) reminds us that operational definitions are not always good or valid.They are simply descriptions of measurement actions. You could argue that the last definition is an operational definition.istinguishing Operational Definitions, Variables, and Values. Throughout this book we will be referring to psychological variables. Some students do not have a grasp of the simple term variable, so this might be a good time to clarify the concept.
A fluvioglacial landform created by both erosion and deposition by melt water is a Sandur or outwash plain that often has braided streams. Outwash plains are areas that may have been glaciated by ice sheets and then affected by melt water or they may be areas in front of the snout.
Every glacier has an accumulation zone and an ablation zone. Between them lies an equilibrium line where accumulation occurs as fast as ablation. Not only do these zones vary in size, but it's possible for one zone, such as the zone of ablation, to cover an entire glacier; that could happen in a warm year.ccumulation happens on a glacier's upper regions in the accumulation zone. Composed mainly of ice with very little new snow, the ablation zone lies at lower altitudes where the glacier is melting, sublimating, or calving, resulting in mass loss.