Water is one of the most essential substances for life — and yet, the way it moves through biological systems is more than just “water flows downhill.” In this webquest, you will explore the concept of water potential (Ψ), how it is calculated and affected by solutes and pressure, and how it drives movement of water in cells, tissues, and plants. You’ll begin with a short video to introduce the idea, then dive into a detailed website to deepen your understanding, explore an interactive simulati