water vapor turning to frost is an example of a phase.
water vapor turning to frost is an example of a phase.
water vapor turning to frost is an example of?
a phase
one example of deposition is the process by which, in sub-freezing air, water vapor changes directly to ice without first becoming a liquid. this is how frost and hoar frost form on the ground or other surfaces. another example is when frost forms on a leaf. for deposition to occur, thermal energy must be removed from a gas. when the air becomes cold enough, water vapor in the air surrounding the leaf loses enough thermal energy to change into a solid. even though the air temperature may be below the dew point, the water vapor may not be able to condense spontaneously if there is no way to remove the latent heat. when the leaf is introduced, the supercooled water vapor immediately begins to condense, but by this point is already past the freezing point. this causes the water vapor to change directly into a solid.
deposition (phase transition)
a comparison of goes-12 satellite images shows the distribution of atmospheric water vapor relative to the oceans, clouds and continents of the earth. vapor surrounds the planet but is unevenly distributed. the image loop on the right shows monthly average of water vapor content with the units are given in centimeters, which is the precipitable water or equivalent amount of water that could be produced if all the water vapor in the column were to condense. the lowest amounts of water vapor (0 centimeters) appear in yellow, and the highest amounts (6 centimeters) appear in dark blue. areas of missing data appear in shades of gray. the maps are based on data collected by the moderate resolution imaging spectroradiometer (modis) sensor on nasa's aqua satellite. the most noticeable pattern in the time series is the influence of seasonal temperature changes and incoming sunlight on water vapor. in the tropics, a band of extremely humid air wobbles north and south of the equator as the seasons change. this band of humidity is part of the intertropical convergence zone, where the easterly trade winds from each hemisphere converge and produce near-daily thunderstorms and clouds. farther from the equator, water vapor concentrations are high in the hemisphere experiencing summer and low in the one experiencing winter. another pattern that shows up in the time series is that water vapor amounts over land areas decrease more in winter months than adjacent ocean areas do. this is largely because air temperatures over land drop more in the winter than temperatures over the ocean. water vapor condenses more rapidly in colder air.
water vapor