Float or Sink : Why do things float? Why do things sink - Lesson for kids

Floating or sinking of an object does not depend on its weight, it depends upon its density. Things denser than water sink in water whereas things having less mass than water float over it. In this video for kids , toddlers can learn about water- displacement factor ,which is crucial to understand the concept of floating and sinking.Why an iron nail sinks but a big ship keeps floating over the water.