Advertisements
Advertisements
Question
During summer days, water kept in an earthen pot (pitcher) becomes cool because of the phenomenon of :
Options
diffusion
transpiration
osmosis
evaporation
Advertisements
Solution
evaporation
An earthen pot has a large number of extremely small pores on its wall. Some of the water continuously keeps seeping through these pores. This water evaporates continuously and takes the latent heat required for vaporization from the earthen pot and the remaining water. In this way, the remaining water loses heat and gets cooled.
APPEARS IN
RELATED QUESTIONS
Why does a desert cooler cool better on a hot dry day?
Why are we able to sip hot tea or milk faster from a saucer than a cup?
A liquid can change into vapour state at all temperatures.
State three factors which affect the rate of evaporation of a liquid.
Water in a dish evaporates faster than in a bottle. Give reason.
Define the following term Freezing.
Why are we able to sip hot tea or milk faster from a saucer rather than from a cup ?
Give a geographical reason:
Air becomes saturated.
Look at Fig. 1.3 and suggest in which of the vessels A,B, C or D the rate of evaporation will be the highest? Explain.
Comment on the following statements:
Evaporation produces cooling.
