When pebbles are added: They fill up the empty spaces in the cup, reducing the available space.Can you add more pebbles? No, once it’s full to the brim, there’s no more space unless pebbles are removed.Half-filled with water: Water occupies space between the pebbles or above them.When poured continuously: Water overflows because the cup has reached its capacity.What can you say about space occupied by matter? All matter, whether solid (pebbles) or liquid (water), occupies space. This proves that matter takes up space and cannot share the same space at the same time.