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  2. Water vapor - Wikipedia

    en.wikipedia.org/wiki/Water_vapor

    Whenever a water molecule leaves a surface and diffuses into a surrounding gas, it is said to have evaporated. Each individual water molecule which transitions between a more associated (liquid) and a less associated (vapor/gas) state does so through the absorption or release of kinetic energy. The aggregate measurement of this kinetic energy ...

  3. Cloud - Wikipedia

    en.wikipedia.org/wiki/Cloud

    This is an accepted version of this page This is the latest accepted revision, reviewed on 22 January 2025. Visible mass of liquid droplets or frozen crystals suspended in the atmosphere "Nephology" redirects here. Not to be confused with Nephrology. For other uses, see Cloud (disambiguation). Cloudscape over Borneo, taken by the International Space Station Part of a series on Weather ...

  4. Evaporation - Wikipedia

    en.wikipedia.org/wiki/Evaporation

    The rate of evaporation in an open system is related to the vapor pressure found in a closed system. If a liquid is heated, when the vapor pressure reaches the ambient pressure the liquid will boil. The ability for a molecule of a liquid to evaporate is based largely on the amount of kinetic energy an individual particle may possess. Even at ...

  5. Cloud physics - Wikipedia

    en.wikipedia.org/wiki/Cloud_physics

    the cloud IR emissivity, with values between 0 and 1, with a global average around 0.7; the effective cloud amount, the cloud amount weighted by the cloud IR emissivity, with a global average of 0.5; the cloud (visible) optical depth varies within a range of 4 and 10. the cloud water path for the liquid and solid (ice) phases of the cloud particles

  6. Interstellar cloud - Wikipedia

    en.wikipedia.org/wiki/Interstellar_cloud

    An interstellar cloud is generally an accumulation of gas, plasma, and dust in our and other galaxies. But differently, an interstellar cloud is a denser-than-average region of the interstellar medium , the matter and radiation that exists in the space between the star systems in a galaxy.

  7. Dispersion (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Dispersion_(chemistry)

    Gas: Gas Gas mixture: air (oxygen and other gases in nitrogen) not possible: Liquid: Aerosol: fog, mist, vapor, hair sprays, moisted air Aerosol: rain (also produces rainbows by refraction on water droplets) Solid: Solid aerosol: smoke, cloud, air particulates: Solid aerosol: dust, sand storm, ice fog, pyroclastic flow: Gas Liquid Oxygen in water

  8. List of states of matter - Wikipedia

    en.wikipedia.org/wiki/List_of_states_of_matter

    Liquid: A mostly non-compressible fluid. Able to conform to the shape of its container but retains a (nearly) constant volume independent of pressure. Gas: A compressible fluid. Not only will a gas take the shape of its container but it will also expand to fill the container. Mesomorphic states: States of matter intermediate between solid and ...

  9. State of matter - Wikipedia

    en.wikipedia.org/wiki/State_of_matter

    A vapor can exist in equilibrium with a liquid (or solid), in which case the gas pressure equals the vapor pressure of the liquid (or solid). A supercritical fluid (SCF) is a gas whose temperature and pressure are above the critical temperature and critical pressure respectively. In this state, the distinction between liquid and gas disappears.