Ice

Ice is water frozen into a solid state. Depending on the presence of impurities such as particles of soil or bubbles of air, it can appear transparent or a more or less opaque bluish-white color.

In the Solar System, ice is abundant and occurs naturally from as close to the Sun as Mercury to as far as the Oort cloud. Beyond the Solar System, it occurs as interstellar ice. It is abundant on Earth's surface  particularly in the polar regions and above the snow line  and, as a common form of precipitation and deposition, plays a key role in Earth's water cycle and climate. It falls as snowflakes and hail or occurs as frost, icicles or ice spikes.

Ice molecules can exhibit up to sixteen different phases (packing geometries) that depend on temperature and pressure. When water is cooled rapidly (quenching), up to three different types of amorphous ice can form depending on the history of its pressure and temperature. When cooled slowly correlated proton tunneling occurs below 20 K giving rise to macroscopic quantum phenomena. Virtually all the ice on Earth's surface and in its atmosphere is of a hexagonal crystalline structure denoted as ice Ih (spoken as "ice one h") with minute traces of cubic ice denoted as ice Ic. The most common phase transition to ice Ih occurs when liquid water is cooled below 0°C (273.15K, 32°F) at standard atmospheric pressure. It may also be deposited directly by water vapor, as happens in the formation of frost. The transition from ice to water is melting and from ice directly to water vapor is sublimation.

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Ice

Latest News for: Discovery water

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Port Huron Times Herald 22 Jun 2024
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The Maritime Executive 21 Jun 2024
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Penn Live 21 Jun 2024
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Azcentral 21 Jun 2024
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The National 21 Jun 2024
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Israel Hayom 20 Jun 2024
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The Atlantic 20 Jun 2024
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The Spokesman-Review 20 Jun 2024
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A new era: Florida Museum's exhibits director to retire next month

The Gainesville Sun 20 Jun 2024
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The Call 20 Jun 2024
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The Call 20 Jun 2024
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The Latest | US-built pier in Gaza unloads aid again after weather setback, official says

The Call 20 Jun 2024
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