What does a pressure gradient refer to?

A pressure gradient refers to the rate of pressure change in a particular direction between two points. It indicates a difference in pressure and is a crucial concept in areas such as meteorology and physics, where it helps to explain how air moves. Air tends to move from an area of high pressure to an area of low pressure, which is the fundamental principle that drives wind and weather patterns. Understanding pressure gradients is essential for predicting changes in the atmosphere and can also apply to various contexts where pressure differences influence movement, such as in fluids.