Pressure phenomena refer to the effects and behaviors of materials and fluids under varying levels of pressure. This can include changes in state, such as how gases compress more easily than liquids, or how solids can deform under high pressure. Understanding these phenomena is crucial in fields like engineering, meteorology, and geology. One common example of pressure phenomena is the behavior of gases in a closed container. When the temperature increases, the gas molecules move faster, leading to increased pressure. This principle is described by Boyle's Law and Charles's Law, which help predict how gases will react under different conditions of temperature and volume.