PROBLEM 2Q
Explain how drinking from a straw works. What causes the beverage to go up the straw? Is there an upper limit to how long a straw can theoretically be and still work as a drinking straw?
Solution 2Q
Step 1:
Here, we need to explain how drinking from a straw works and also state the reason what causes the beverage to go up the straw and mention is there an upper limit to how long a straw can theoretically be and still work as a drinking straw.
Straws work by atmospheric pressure. Sucking creates a pressure difference between the inside of the straw and the outside. When you suck on a straw you remove some of the air molecules lowering the number of collisions that occur inside the straw and therefore lowering the pressure. The pressure outside the straw remains the same resulting in a pressure differential. The pressure outside the straw becomes greater than the pressure inside the straw. The greater external pressure pushes the liquid up the straw and into your mouth and this is how the straw works.
