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  2. Freezing - Wikipedia

    en.wikipedia.org/wiki/Freezing

    Most liquids freeze by crystallization, formation of crystalline solid from the uniform liquid. This is a first-order thermodynamic phase transition, which means that as long as solid and liquid coexist, the temperature of the whole system remains very nearly equal to the melting point due to the slow removal of heat when in contact with air, which is a poor heat conductor.

  3. Ice - Wikipedia

    en.wikipedia.org/wiki/Ice

    Ice, frozen in the stream bed, blocks normal groundwater discharge, and causes the local water table to rise, resulting in water discharge on top of the frozen layer. This water then freezes, causing the water table to rise further and repeat the cycle. The result is a stratified ice deposit, often several meters thick. [61]

  4. Phases of ice - Wikipedia

    en.wikipedia.org/wiki/Phases_of_ice

    At pressures in excess of 50 GPa (7,300,000 psi) it is predicted that superionic ice would take on a body-centered cubic structure. However, at pressures in excess of 100 GPa, and temperatures above 2000 K, it is predicted that the structure would shift to a more stable face-centered cubic lattice.

  5. Permafrost - Wikipedia

    en.wikipedia.org/wiki/Permafrost

    Permafrost temperature profile. Permafrost occupies the middle zone, with the active layer above it, while geothermal activity keeps the lowest layer above freezing. The vertical 0 °C or 32 °F line denotes the average annual temperature that is crucial for the upper and lower limit of the permafrost zone, while the red lines represent seasonal temperature changes and seasonal temperature ...

  6. Snow - Wikipedia

    en.wikipedia.org/wiki/Snow

    Snowflakes take on a variety of shapes, basic among these are platelets, needles, columns and rime. As snow accumulates into a snowpack, it may blow into drifts. Over time, accumulated snow metamorphoses, by sintering, sublimation and freeze-thaw. Where the climate is cold enough for year-to-year accumulation, a glacier may form.

  7. Cold chain - Wikipedia

    en.wikipedia.org/wiki/Cold_chain

    A cold chain is a supply chain that uses refrigeration to maintain perishable goods, such as pharmaceuticals, produce or other goods that are temperature-sensitive. [1] Common goods, sometimes called cool cargo, [2] distributed in cold chains include fresh agricultural produce, [3] seafood, frozen food, photographic film, chemicals, and pharmaceutical products. [4]

  8. How Long Does It Take to Thaw a Frozen Turkey? - AOL

    www.aol.com/long-does-thaw-frozen-turkey...

    Then wrap and seal the turkey in a garbage bag, place it on a baking sheet, and thaw it in the refrigerator for a week, flipping the bird over every day. “The bird will thaw perfectly and be ...

  9. Hypothermia - Wikipedia

    en.wikipedia.org/wiki/Hypothermia

    Until the body temperature is raised to near-normal levels: Types: Primary hypothermia: caused by exposure to a cold environment; Secondary hypothermia: caused by an underlying pathology that prevents the body from generating enough core heat. Causes: Mainly exposure to cold weather and cold water immersion: Risk factors