The conversation between human and AI assistant.
How does the water come up when we suck through the straws?
That makes sense. Can you explain why the water doesn't continue to flow up through the straw and spill out of the top when we are not sucking anymore?
When we stop sucking, the vacuum inside the straw disappears and the air pressure inside and outside the straw becomes equal again. This causes the liquid to stop moving up the straw and to stay in place until it is sucked up again.