VISIBLY EMPTY VESSEL (Amazing Science Games and Experiments)

Materials Required:

1. Empty glass bottle
2. Vessel
3. Water

Procedure:

1. Take an empty glass bottle and remove its cap.
2. Hold it upside down and immerse it into a vessel filled with water. Water enters the bottle and rises up only a certain point.
3. Now, immerse the bottle deeper in the water.
4. The level of water inside the bottle remains unchanged, while the level of water outside the bottle rises up gradually.
5. It is quite apparent that there is definitely something inside the bottle which is preventing the water from entering it.
6. Now, do one thing. Tilt the bottle a little to one side. Oh! What’s this? The bubbles coming out of the mouth of the bottle are rushing noisily to the surface and meeting with their end by bursting out there. These bubbles are of air only.

This is what happens:

The air trapped inside the bottle gets an opportunity to escape when the bottle is tilted to one side, causing the water to fill the vacuum thus created by the exit of air.