Evaporation - class-IX

Rate of evaporation Increases with the rise in temperature as increasing temperature increases the kinetic energy of molecules of the liquid which facilitates the molecule to convert into vapour.

The higher the temperature of the substance the greater the kinetic energy of the molecules at its surface and therefore the faster the rate of their evaporation.

Rainfall occurs primarily due to evaporation of water from water bodies like lakes and oceans and condensation of water in the form of precipitation like rainfall or snowfall.

1. Temperature - If we increase the temperature of a liquid, its molecules get more kinetic energy and more molecules will come out rapidly from the surface of liquid i.e. rate of evaporation increases.

Evaporation and boiling, both are vaporisation. Boiling is a rapid process, which happens in the whole liquid whereas evaporation happens only on the surface of liquid and is a slow process.

Larger surface area means more molecules per unit volume in the exposed surface area , which are capable to go out from surface i.e. larger rate of evaporation . Hence given statement is false .

If temperature is high then kinetic energy of the molecules will be high and rate of evaporation is higher.

Evaporation is a process in which some molecules of a liquid, which have greater kinetic energy, escape from the liquid and enter the atmosphere.

Evaporation is a process in which some molecules of a liquid, which have greater kinetic energy, escape from the liquid and enter the atmosphere.

Evaporation is a process in which some molecules of a liquid, which have greater kinetic energy, escape from the liquid and enter the atmosphere.

Evaporation is a process in which some molecules of a liquid, which have greater kinetic energy, escape from the liquid and enter the atmosphere.

Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase. So there is loss of energy due to latent heat of the liquid.

A fan produces a feeling of comfort because of evaporation of sweat because on hot day, our body sweats to loose heat through the evaporation of moisture.In still air evaporation is slow. A fan or breeze helps by replacing hot humid air with cooler dries air that allow for more evaporation

Evaporation is a process in which some molecules of a liquid, which have greater kinetic energy, escape from the liquid and enter the atmosphere.

Evaporation causes cooling.
A dog pants with its tongue sticking out on a hot day because its saliva vapourises, cooling the tongue.

The ratio of actual amount of water vapour present in volume of air at a given temperature to maximum amount that air could hold at that temperature, expressed as percentage is relative humidity.

When the pressure of molecules of liquid become equal to the atmospheric pressure, the molecules of liquid change into vapours.

Earthen pots are used in summer. The pot has several pores through which water rinses out to the outer surface of the earthen pot and evaporates. In this process it takes away heat from the water inside the pitcher. As a result, the water inside gets cooled.

Evaporation is the key process involved in the drying up of clothes. Since evaporation is fastest in dry weather on a windy day, clothes dry faster on these days.

Dogs hang out their tongue during summers. This helps produce a cooling effect due to evaporation.

Salt is produced by direct evaporation of sea-water in sun. This process is cheapest and most efficient.

Evaporation ponds are used. Evaporation ponds are artificial ponds with very large surface area that are designed to efficiently evaporate water by sunlight and exposure to the ambient temperature.

Sea water is a mixture of water and salt , by the phenomenon of evaporisation water of this mixture is evaporated and we get salt only .

The wet paint is dried out because liquid portion in paint is evaporated . Although evaporisation is also a type of vaporisation .

Splashes dry up at the edges of puddle , because of evaporisation as high energy molecules of water escape from water .

Clothes are dried by evaporation due to heat from sunlight . In a line , clothes get sunlight for whole day , and due to heat from sun, rate of evaporation increases and clothes dry quickly .

Our floor get wet due to mopping , and after some time water droplets are evaporated and floor become dry .

Evaporization is the vaporization process of converting the liquid phase to vapour phase when surrounding temperature is more than liquid / water temperature.

Evaporation is a surface phenomenon.
Particles present on the surface of a liquid only face attraction from one side (the side containing fluid particles) and surface tension. Where as particles inside the liquid would face attractive forces from all around, making it difficult for such particles to evaporate or escape.
Hence the statement is true, explanation is true and the explanation is the correct explanation for the statement.