A question
Why do heavy ships float?
A calm, true answer. Then, if the wondering keeps going, the whole episode.
The short answer
Because of shape, not weight. Anything you put into water pushes some water aside, and the water presses back upward exactly as hard as the water that moved weighs. That upward push is called buoyancy.
A solid block of steel sinks. The same steel shaped into a hollow hull floats, because now the whole shape, air and all, shoves aside far more water than the ship weighs. The ship is not fighting the water. It is being held up by it.
Go deeper tonight
The Giant Ship That Floats
The full episode, in one calm voice, with nothing that startles.
Read the guide for this one in the morning.
This connects to
One idea turns up in many different nights. Follow one and the library starts to join up.
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