Pressure fountain with balloon - English very funny and excited

In this video, you will make a wonderful water fountain with very simple materials.

For this, you will need a balloon, a plastic bottle, a bendable straw, glue, and a pair of scissors.

Make a hole near the mouth of the plastic bottle with scissors. Insert a straw in the bottle and secure the hole with the help of glue. Fill the bottle with water. Now blow a balloon and hold its neck with fingertips. Carefully fix the balloon on the mouth of the bottle. When you release the air from the balloon, it creates pressure in the bottle and thus pushes water out creating a wonderful fountain!

So, let’s look at what actually happens in this experiment?