Density Explained: Why Heavy Ships Float

Density Defined: Density is how much mass fits into a certain volume of space.
Key Rule: An object floats if it’s less dense than the liquid it’s placed in.
Steel Trick: Solid steel sinks, but a ship’s hull is hollow, lowering its overall density.
Displacement Magic: Ships push water aside equal to their own weight—this is buoyancy.
Archimedes’ Principle: A floating object displaces a weight of liquid equal to its own weight.
Big and Buoyant: The wide shape of ships spreads their weight, keeping them afloat.
Cargo Load: Even loaded with goods, a ship floats as long as density stays below water’s.
Everyday Example: A canoe floats on the same principle as a giant ocean liner.
Sinking Point: If too much water enters, density rises, and the ship can sink.
Science at Sea: Density and buoyancy are why massive vessels safely travel oceans every day.