Here's why:
* Density: The key difference between a heavy object and a light object lies in their density. Density is a measure of how much mass is packed into a given volume.
* A heavy object has a higher density because it contains more mass in the same volume.
* A light object has a lower density because it contains less mass in the same volume.
* Example: Imagine a cube of steel and a cube of foam that are the same size (same volume). The steel cube will be much heavier because steel has a higher density than foam.
To summarize:
* A heavy object can have the same shape as a light object.
* A heavy object can have the same surface area as a light object.
* But a heavy object cannot have the same volume as a light object unless they are made of the same material.
