Materials:
1. Glass or clear plastic bottle with a lid or cap
2. Water
3. Food colouring (optional)
Procedure:
1. Fill the bottle about three-quarters full with water.
2. Add a few drops of food colouring to the water, if desired. This will help you visualise the water level more easily.
3. Close the lid or cap on the bottle tightly.
4. Squeeze the bottle.
Observation:
When you squeeze the bottle, you will notice that the water level rises in the bottle. This is because the air inside the bottle is taking up space when you squeeze it, and the water is displaced.
Conclusion:
This experiment demonstrates that air occupies space. When you squeeze the bottle, the air inside is compressed and takes up less space, which causes the water level to rise.
