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Home Assignment -4
8.1 Give reason for the following:
A we are able to sip hot tea or milk faster ,
from a saucer rather than a Cup.
B) Clothes dry faster on a windy day.
D ) While putting the clothes for drying we
spread them out.
Answers
Answer:
A) we are able to sip hot tea or milk faster from a saucer rather than a Cup because the The surface area of saucer is more than a cup for which the vapour vapourised easily than in a cup.
B) Clothes dry faster on a windy day because in Wind the humidity is low than Sunshine. so, it quickly absorbs the water in that wet cloth.
C) while putting the clothes for drying we spread them out so that the surface area increases and the cloth quickly gets dry.
Answer:
1) it is easier to sip hot tea or milk faster from a saucer because of evaporation and evaporation causes cooling so is the surface area is more rate of evaporation is faster and so is the cooling rate hence we are able to sip hot tea or milk faster
2) clothes dry faster on a windy day rather than a sunny day because wind help in fast evaporation of moisture present in wet clothes by carrying away along with the moving air
3) while putting the clothes for drying we spread them oyt because more area is exposed to sun and wind which speeds up the rate of reaction