Question

A ship made of iron floats on water while an iron nail sinks. This is because:

• A. Lighter objects float on water
• B. Iron has lower density than water
• C. Iron nail is smaller than the ship
• D. Ship has empty space in it and iron nail doesn't

Answer 1

The correct option is D Ship has empty space in it and iron nail doesn't

Iron has a higher density than water. Any object made of iron can only float on water if it has enough empty space in it. That is why a heavy ship can float on water while an iron nail sinks in water.