The blue jay is a passerine bird in the family Corvidae, native to North America. It is resident through most of eastern and central United States, although western populations may be migratory. Resident populations are also found in Newfoundland, Canada, while breeding populations can be found in southern Canada. It breeds in both deciduous and coniferous forests, and is common near and in residential areas. It is predominantly blue with a white chest and underparts, and a blue crest. It has a
temperature gradient. At sea, a temperature gradient is the change of temperature with depth; a positive gradient is a temperature increase with an increase in depth, and a negative gradient is a temperature decrease with an increase in depth. Thesaurus AntonymsRelated WordsSynonymsLegend:
The orientation or direction of a pressure gradient is always described as being from higher toward lower pressure. The speed of the wind is controlled by the strength of the pressure gradient, the stronger the pressure gradient the higher the wind speed. The strength of the pressure gradient can be discerned from the spacing of isobars on a weather map. Figure PC.4 shows two different pressure gradients.