Lesson 2 of 8
Pressure in liquids
Goal: Describe how pressure in a liquid changes with depth.
The deeper you go in a liquid, the bigger the pressure. It pushes on you from every direction.
- Pressure increases with depth. The deeper you are, the more water there is above you, and its weight presses down.
- Pressure acts in all directions. Water pushes on a diver from above, from below and from every side.
- Particles explain it. The particles in a liquid are always moving. They hit every surface they touch, and each hit is a tiny push. Deeper down, the weight of the liquid above pushes them harder against every surface.
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Key words in this lesson
Pressure The force on each unit of area