What's below the tip of the iceberg? - Camille Seaman | Summary and Q&A

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July 24, 2013
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What's below the tip of the iceberg? - Camille Seaman

TL;DR

Icebergs are mostly hidden beneath the water, with only a fraction visible. They have complex ecosystems, impact ocean currents, and can float thousands of miles.

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Questions & Answers

Q: Why are icebergs mostly underwater?

Icebergs are mostly underwater due to the density of pure ice, which is less than that of seawater. This causes only a small portion of the iceberg to be visible above the surface.

Q: How do icebergs form?

Icebergs form from glaciers, which are made of fresh water and constantly compress and move. Over thousands of years, glaciers build layer upon layer of ice, eventually calving off to become icebergs.

Q: Do icebergs make sounds?

Yes, when icebergs melt, they make a fizzing sound called Bergie Seltzer. This occurs when the water-ice interface reaches compressed air bubbles trapped in the ice, causing them to burst and make a popping sound.

Q: How big can icebergs be?

Icebergs come in various sizes. The smallest are called growlers, about the size of a car, while the largest are classified as very large, towering over 270 feet above sea level and stretching over 670 feet in length.

Summary & Key Takeaways

  • Icebergs are mostly underwater, with only a small portion visible above the surface due to the density of pure ice.

  • They are created by glaciers, which constantly compress, move, and add layers of ice over thousands of years.

  • Icebergs have complex ecosystems, impact ocean currents, and support a variety of marine life.

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