Iron nail sinks in water. Empty iron tin box floats on water. why?

This floats on water

Watermelon sink or float in water?

Seeds that float on water

How planktons float on water?

A material that floats on water

An iron nall sinks in water. While a large ship floats on the surface of water. Give reason.

Why do seeds float on water?

Iron sinks in water, wood floats in water. If we tie an iron piece to the same volume of wood piece, and dropped it water, would it sink or float ? Make a guess and find out whether yours gucess is correct or wrong with an experiment. Give reasins.