Here's a breakdown:

* Displacement: When an object is placed in a fluid (like water), it pushes the fluid out of the way. This is called displacement.

* Volume: The amount of space an object occupies is its volume.

* Archimedes' Principle: This principle states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced by the object.

Important Considerations:

* Partially Submerged: If an object is only partially submerged, it displaces a volume of fluid equal to the volume of the submerged portion of the object.

* Density: The density of the object compared to the density of the fluid determines whether the object will float or sink.

Let me know if you'd like more details or have any other questions!