---
title: "A person uses a straw to drink water from a cup. Which of the following best describes the physics of how the water moves up the straw?"
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url: "https://nerd-notes.com/ubq/107162/"
date_modified: "2026-08-18T02:38:18+00:00"
---

# A person uses a straw to drink water from a cup. Which of the following best describes the physics of how the water moves up the straw?

A person uses a straw to drink water from a cup. Which of the following best describes the physics of how the water moves up the straw?

- **A.** The water moves up to conserve energy because the kinetic energy at the mouth must be higher.
- **B.** The person reduces the pressure inside the straw, and the higher atmospheric pressure on the surface of the water pushes the water up.
- **C.** The density of the water inside the straw decreases, allowing it to float upward.
- **D.** The person’s mouth creates a suction force that pulls the water molecules upward.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/107162/*