Answer
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Hint: Fog, mist and frost all are a form of water vapour of different moisture and different content. We have to understand each and every natural phenomenon as given here, evaporation, transpiration, condensation and freezing. After learning about all the phenomena we will conclude the process for which fog, mist or frost are created.
Complete step by step answer:
Let us understand about the phenomenon given in the options-
a. Evaporation: It is a process by which an element or compound changes its state from liquid to gas just under the boiling point of that compound. IT is the process by which a liquid enters the atmosphere as water vapour. The rate of evaporation depends upon the temperature difference between the evaporating surface and the air, the relative humidity and wind.
b. Transpiration: Transpiration is a process by which the green plants using their aerial parts, mainly stomata, releases water into the atmosphere in the means of water vapour.
c. Condensation: Condensation is defined as a process in which the water vapour in the atmosphere changes into liquid or solid form. It happens when a hot body generally meets a cool surface and hence it condenses.
d. Freezing: It is the process in which a liquid converts into solid form. It occurs when the temperature of the substance is lowered below its freezing point or the point of transition between two phases.
Understanding the above definition, we came to a conclusion that fog, mist and frost all are a form of water vapour which are converted into their liquid and solid state. This usually happens in the winter season, when the temperature is low, hence the hotter water vapour meets the cool air and condenses into such forms.
So, the correct option is c. Condensation.
Note: It must be noted that if there is more humidity, meaning the amount of water vapour in a certain air, the condensation also increases. Condensation only occurs when relative humidity is more than $100\% $. Relative humidity is defined as the percentage of amount of water vapour present in air to the total amount of water vapour that it can hold.
Complete step by step answer:
Let us understand about the phenomenon given in the options-
a. Evaporation: It is a process by which an element or compound changes its state from liquid to gas just under the boiling point of that compound. IT is the process by which a liquid enters the atmosphere as water vapour. The rate of evaporation depends upon the temperature difference between the evaporating surface and the air, the relative humidity and wind.
b. Transpiration: Transpiration is a process by which the green plants using their aerial parts, mainly stomata, releases water into the atmosphere in the means of water vapour.
c. Condensation: Condensation is defined as a process in which the water vapour in the atmosphere changes into liquid or solid form. It happens when a hot body generally meets a cool surface and hence it condenses.
d. Freezing: It is the process in which a liquid converts into solid form. It occurs when the temperature of the substance is lowered below its freezing point or the point of transition between two phases.
Understanding the above definition, we came to a conclusion that fog, mist and frost all are a form of water vapour which are converted into their liquid and solid state. This usually happens in the winter season, when the temperature is low, hence the hotter water vapour meets the cool air and condenses into such forms.
So, the correct option is c. Condensation.
Note: It must be noted that if there is more humidity, meaning the amount of water vapour in a certain air, the condensation also increases. Condensation only occurs when relative humidity is more than $100\% $. Relative humidity is defined as the percentage of amount of water vapour present in air to the total amount of water vapour that it can hold.
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