Natural Sciences · Intermediate · Lesson 3 of 7
Archimedes’ Principle
Why things float
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
- Buoyant force = weight of the fluid displaced.
- Floating objects sink until they displace their own weight. Fraction underwater = ρ_object ÷ ρ_fluid.
- Average density decides floating, which is why hollow steel ships float.
Steps
- Steel ships
- Archimedes’ principle
- Tip of the iceberg
- Half and half
- Floating density
- Weighing underwater