Question

Why does an iron nail sink in water but a large ship floats? (2 marks)

Answer 1

Answer:

1. Things float or sink in water because of their density and not because of their size. Iron nail sinks because it is denser than water. (1 mark)
2. However, a ship has a lot of empty space inside it, making it less denser than water. Hence it floats irrespective of its size. (1 mark)