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Why does ice form at the surface of a body of water

Conceptual Physics | 12th Edition | ISBN: 9780321909107 | Authors: Paul G. Hewitt ISBN: 9780321909107 29

Solution for problem 30RQ Chapter 15

Conceptual Physics | 12th Edition

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Conceptual Physics | 12th Edition | ISBN: 9780321909107 | Authors: Paul G. Hewitt

Conceptual Physics | 12th Edition

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Problem 30RQ

Why does ice form at the surface of a body of water instead of at the bottom?

Step-by-Step Solution:
Step 1 of 3

The freezing point of water is 0°C and its maximum density is reached at 4°C. Density increases with the decrease in temperature, the entire water from the surface to its bottom will reach 4°C after a certain length of time. When it cools, the thin layer close to the surface of the water becomes denser, therefore heavier, and sinks toward the bottom of the lake, and is replaced on top warmer water which rises to the surface. If the temperature continues to drop and dips below 4°C, the layer close to the surface becomes less dense when approaching the freezing point; it then increases in volume...

Step 2 of 3

Chapter 15, Problem 30RQ is Solved
Step 3 of 3

Textbook: Conceptual Physics
Edition: 12
Author: Paul G. Hewitt
ISBN: 9780321909107

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Why does ice form at the surface of a body of water

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