👉 A fluid is a substance that takes the shape of its container while maintaining a constant volume, unlike gases which expand to fill their container and liquids which flow but retain their shape. Fluids can be liquids, such as water or oil, or gases, like air or steam. They have no fixed shape but can move freely and can flow from areas of higher pressure to lower pressure. This unique property allows fluids to fill any space they occupy, making them essential in various natural and industrial processes.
