Q4 of 17 Page 71

While deciding the unit for heat, which temperatures interval is chosen? Why?

While defining the unit for heat, the temperature range between 14°C to 15.5°C is chosen.


If we take different temperature range than 14°C to 15.5°C, the amount of heat required will be slightly different. It is, therefore, essential to define a specific temperature range while.


defining the unit of heat.


More from this chapter

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2

Observe the following graph. Considering the change in volume of water as its temperature is raised from 0oC, discuss the difference in the behaviour of water and other

substances. What is this behavior of water called?


 3

What is meant by specific heat capacity? How will you prove experimentally that different substances have different specific heat capacities?

 5

Explain the following temperature vs time graph.

 6

Explain the following:

What is the role of anomalous behaviour of water in preserving aquatic life in regions of cold climate?