HOW ARE WE ABLE TO DRINK JUICE USING A STRAW ?

Drinking juice or any such liquid beverage using a straw involves the following steps, let us analyse them scientifically:

1. The initial action involves sucking the liquid. By squeezing in the air between the internal volume of straw and the juice, we create a suction or a pumping action on the liquid of the beverage.
2. Every liquid is bounded by a force which binds them together and that force is called the force of cohesion (force of attraction between similar elements). Due to this force, the liquid continuously gets pumped up to our mouth as a response to the sucking action.
3. The pumping up or suction of the juice liquid stops as soon as we stop sucking up the juice.
4. This is how the straws act as the medium of transmission of suction pressure and juice delivery to our mouth and we drink beverages comfortably using these straws.