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Give reasons for the following: Even when the water in the lakes is frozen, fish can survive. - Physics

Short Note

What will be the approximate temperature of water in the lake shown in the following diagram?

(i) At X, and
(ii) At Y?

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Solution

The layer at the top level is ice so its temperature is therefore 0°C and temperature at every layer of water below ice increases by 1°C

(i) At X = 1°C since it is the first layer below the ice

(ii) At Y = 4°C since it is the fourth layer below ice

Concept: Graphs Showing Variation of Volume and Density of Water with Temperature in the 0 to 10°C Range
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APPEARS IN

Frank Class 9 Physics ICSE
Chapter 5 Heat
Thermal Expansion | Q 10 | Page 202
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