Read the folowing paragraph and answer the questions.
If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy.
The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistant box (meaning that the energy exchange takes place between the two objects only), then no energy can flow from inside the box or come into the box.
i. Heat is transferred from where to where?
ii. Which principle do we learn about from this process?
iii. How will you state the principle briefly?
iv. Which property of the substance is measured using this principle?
Answers
Heat is transferred from where to where?
Heat is transferred between a hot and cold object.
Which principle do we learn about from this process?
We learn about the principle of transferring heat energy from one body to the other.
How will you state the principle briefly?
When we transfer heat from one body to the other the object which is heat will lose its energy or temperature till the cooler object attain the equal temperature of the heated object.
Which property of the substance is measured using this principle?
The thermal conductivity of an object can be found by using this principle.
Answer:
1)Heat is transferred from where to where?
Heat is transferred between a hot and cold object.
2)Which principle do we learn about from this process?
We learn about the principle of transferring heat energy from one body to the other.
3)How will you state the principle briefly?
When we transfer heat from one body to the other the object which is heat will lose its energy or temperature till the cooler object attain the equal temperature of the heated object.
4)Which property of the substance is measured using this principle?
The transfer of energy between objects that are in physical contact. Thermal conductivity is the property of a material to conduct heat and evaluated primarily in terms of Fourier's Law for heat conduction. Convection. The transfer of energy between an object and its environment, due to fluid motion