How did the solid objects fit into the container? Were there any gaps or spaces between them?The solid objects fit in tightly if arranged properly, but yes, there were small gaps or spaces between them. This is because solid objects have fixed shapes, and unless they are shaped to fit together like puzzle pieces, air spaces remain.Example: Marbles in a jar may not fully occupy all space. The container will look full, but if you pour water, the water will fill the gaps, proving that space still exists.