Activity 2 (page 139)
Take two similar plates. Place one of the plates in sunlight and keep the other under shade. Now, pour eQuestionual amount of water in each of the plates (NCERT Fig. 14.5). You can use a cap of a bottle to measure water. Make sure that water does not spill over. Observe the two plates after every 15 minutes. Does the water seem to disappear? From which plate does it disappear first? What is the source of heat for this evaporation?
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If you place the plate filled with water in the sun then a small amount of water will be evaporated due to the sun’s heat.
On the other part, the amount of water place in the shade will be the same as earlier.
The source of heat for evaporation is the sun’s heat and it can vaporize some water from the plate that is placed under the sun’s heat.
So water does not remain same in the both plates.
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