Pressure & Depth

P = ρgh

An interactive lesson with 6 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• $P = P_\text{surface} + \rho g h$: every 10 m of water adds about 1 atmosphere.
• Pressure depends on depth, not on the container’s shape.
• Pascal’s principle lets hydraulics multiply force (in exchange for distance).

Steps

1. Ears popping
2. Pressure grows with depth
3. Deep dive
4. Hydraulics
5. Squeezing a balloon
6. Odd-shaped vases