[Music] so before we begin let us find out what is happening here when you drop the straw into the bottle the air inside it makes it float when you squeeze the bottle the space inside is compressed so there is less space for the air to circulate and the pressure inside the bottle increases [Music] the increase in air pressure pushes the water up into the straw making it heavier so it sinks then when you release the pressure on the bottle the air pressure decreases now the air has more space to move around so the air fills
the straw again and the straw floats back to the top of the bottle [Music] for this experiment we need a plastic bottle paper clips and a straw [Music] [Music] [Music] [Music] [Music] you
