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Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536

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BuyFindarrow_forward

Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536
Textbook Problem

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FIGURE 16.4 A cirque glacier in Alaska.

Why is only part of the ice bright white?

To determine

The reason why only part of the ice is bright white.

Explanation

In general, the objects that reflect all wavelengths of light with equal intensity appears white to human eye, which is what the hexagonal crystalline structure of a snowflake does. As the layer of snow under progressive burial and increased pressure, compacts into glacial ice over hundreds or thousands of years, the material density increases and ice becomes denser.

Under this compressive pressure, more ice crystals are compressed into the same volume...

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