What do fog, dew and frost have in common?

Question

I need it for my geography homework!!!
list as many as u can!!!
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Answer 1

the point at which they all form is called the Dew Point. what ever form the water takes happens after this point

Answer 2

there's a undeniable volume of water vapor interior the air. it fairly is noted as humidity. At bigger temperatures, the air can carry extra water earlier it gets saturated and can't carry any further. So, because of the fact the temperature decreases, the air will become completely saturated (one hundred% relative humidity) and liquid water is shaped. it fairly is noted as the dew factor. If the air reaches the dew factor, fog (certainly tiny water droplets) is shaped interior the air. If a floor reaches the dew factor, dew is shaped on that floor. If the exterior then gets to 32F or under, the dew freezes into frost.

Answer 3

water

Answer 4

Fog is a cloud in contact with the ground. Fog differs from other clouds only in that fog touches the surface of the Earth. The same cloud that is not fog on lower ground may be fog where it contacts higher ground such as hilltops or mountain ridges.

The foggiest place in the world is the Grand Banks off the island of Newfoundland, Canada. Fog is frequent here as the Grand Banks is the meeting place of the cold Labrador Current from the north and the much warmer Gulf Stream from the south.

Characteristics
Most types of fog form when the relative humidity reaches 100% at ground-level. Fog can form suddenly, and can dissipate just as rapidly, depending on what side of the dewpoint the temperature is on.

An important exception to the general rule is sea fog. This is due to the peculiar effect of salt. Clouds of all types require minute hygroscopic particles upon which water vapor can condense. Over the ocean surface, the most common particles are salt from salt spray produced by breaking waves. Except in areas of storminess, the most common areas of breaking waves are located near coastlines, hence the greatest densities of airborne salt particles are there. Condensation on salt particles has been observed to occur at humidities as low as 70%, thus fog can occur even in relatively dry air in suitable locations such as the California coast. Typically, such lower humidity fog is preceded by a transparent mistiness along the coastline as condensation competes with evaporation, a phenomenon that is typically noticeable by beachgoers in the afternoon.

Fog occasionally produces precipitation in the form of drizzle. Drizzle occurs when the humidity of fog attains 100% and the minute cloud droplets begin to coalesce into larger droplets. This can occur when the fog layer is lifted and cooled sufficiently, or when it is forcibly compressed from above. Drizzle becomes freezing drizzle when the temperature at the surface drops below the freezing point.

Fog reduces visibility. Although most sea vessels can penetrate fog using radar, road vehicles have to travel slowly and use low-beam headlights. Localised fog is especially dangerous, as drivers can be caught by surprise. Fog is particularly hazardous at airports, where some attempts have been made to develop methods (such as using heating or spraying salt particles) to aid fog dispersal. These methods enjoy some success at temperatures below freezing.

and

Dew is water in the form of droplets that appears on thin, exposed objects in the morning or evening. As the exposed surface cools by radiating its heat to the sky, atmospheric moisture condenses at a rate greater than that of which it can evaporate, resulting in the formation of water droplets.

When temperatures are low enough dew takes the form of ice; this form is called frost.

As dew is related to the temperature of surface, in late summer it is formed most easily on surfaces which are not warmed by conducted heat from deep ground, such as (grass) leaves, railings, car roofs and bridges.

Culturally dew is often associated with purity and freshness. This is evidenced by the names of certain popular beverages such as Mountain Dew and Sierra Mist.

Dew should not be confused with Guttation, which is the process by which plants release excess water from the tips of their leaves.

Formation
The amount of water vapour air can hold depends on temperature. The temperature at which air is saturated with water vapour is called the Dew point. When surface temperature drops, eventually reaching the dew point, atmospheric water vapour condenses to form small droplets on the surface. This process distinguishes dew from those hydrometeors (meteorological occurrences of water) which are formed directly in air cooling to its dew point (typically around condensation nuclei) such as fog or clouds. The thermodynamic principles of formation, however, are virtually the same.

As condensation sets free latent heat, further cooling of the air next to the surface is constricted. Therefore as a rule of thumb a clear and calm night's minimum temperature will be about the value of the dew point measured the afternoon before.

Occurrence
Sufficient cooling of the surface typically takes place when it loses more energy by infrared radiation than it receives as solar radiation from the sun, which is especially the case in clear nights. As another important factor, poor thermal conductivity restricts the replacement of such losses from deeper ground layers which are typically warmer at night.

Preferred objects of dew formation are thus poor conducting or well isolated from the ground, and non-metallic or coated as shiny metal surfaces are poor infrared radiators. Preferred weather conditions include the absence of clouds and few water vapour in the higher atmosphere to minimize glasshouse effects and sufficient humidity of the air near the ground. Typical dew-nights are classically considered to be calm as wind transports (nocturnally) warmer air from higher levels to the cold surface. But if the atmosphere is the major source of moisture (this part of dew is called dewfall), a certain amount of ventilation is needed to replace the vapour that already is condensed. The highest optimum wind speeds could be found on arid islands. If the wet soil beneath is the major source of vapour, however (this part of dew is called distillation), wind always seems to be adverse.

The principles of dew formation do not strictly constrict its occurrence to the night and the outdoors. They are also working when glasses get steamy in a warm wet room or in industrial processes. However, the term condensation is preferred in these cases.

and

Frost, like snow, is the result of deposition of water vapor in saturated air. If solid surfaces in contact with the air are chilled below the deposition point (see frost point), then spicules of ice grow out from the solid surface. The size of the crystals depends on time and the amount of water vapor available.

Frost is often observed around cracks in wooden sidewalks due to the moist air escaping from the ground below. Other objects on which frost develops are those with low specific heat and high thermal emissivity, such as blackened metals; hence the accumulation of frost on the heads of rusty nails. The apparently erratic occurrence of frost in adjacent localities is due partly to differences of elevation, the lower areas becoming colder on calm nights. It is also affected by differences in absorptivity and specific heat of the ground which in the absence of wind greatly influences the temperature attained by the superincumbent air. The formation of white frost on the indoor surface of window panes indicates low relative humidity of the indoor air, otherwise water would first condense in small droplets and then freeze into clear ice.

Because cold air is more dense than warm air, and forms close to the ground, in calm weather cold air pools at ground level. This is known as surface temperature inversion. It explains why frost is more common and extensive in low-lying areas such as valleys and hollows. Areas where frost forms due to cold air trapped against the ground or against a solid barrier such as a wall are known as "frost pockets". Frost can form in these areas even when the reported temperature is above the freezing point of water.

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