Match the statements in column A with those in column B. Column A Column B 1. Transmission of heat energy by actual movement of the molecules in a medium. (a) Thermometer 2. A device which measures the degree of hotness. (b) Clinical Thermometer 3. A thermometric scale used in the laboratory thermometer. (c) Conduction 4. A process of transmission of heat which does not require any medium. (d) Convection 5. A process of transmission of heat in which the particles of a medium do not move towards the source of heat. (e) Radiation 6. A device used for measuring the temperature of the human body. (f) Celsius

1. Transmission of heat energy by actual movement of the molecules in a medium. (d) Convection Convection is the transmission of heat energy by actual movement of the molecules in a medium. Convection takes place in fluids. 2. A device which measures the degree of hotness. (a) Thermometer A device which measures the degree of hotness or coldness is a thermometer. The degree of hotness or coldness is called as temperature. 3. A thermometric scale used in the laboratory thermometer. (f) celsius celsius scale is the thermometric scale used in the laboratory thermometer. This is used to measure the temperature of substances in the laboratory. 4. A process of transmission of heat which does not require any medium. (e) Radiation Radiation is a process of transmission of heat which does not require any medium. It is passed without the movement of molecules in the medium. 5. A process of transmission of heat in which the particles of a medium do not move towards the source of heat. (c) Conduction A process of transmission of heat in which the particles of a medium do not move towards the source of heat is called conduction. Conduction is the process of transfer of heat energy from hot body to cold body by the movement of particles. 6. A device used for measuring the temperature of the human body. (b) Clinical thermometer Thermometer is a device used to measure the temperature. A clinical thermometer is used to measure human body temperature. The range of clinical thermometer is 35 - 42 in degree celsius. Column A Column B 1. Transmission of heat energy by actual movement of the molecules in a medium. (d) Convection 2. A device which measures the degree of hotness. (a) Thermometer 3. A thermometric scale used in the laboratory thermometer. (f) celsius 4. A process of transmission of heat which does not require any medium. (e) Radiation 5. A process of transmission of heat in which the particles of a medium do not move towards the source of heat. (c) Conduction 6. A device used for measuring the temperature of the human body. (b) Clinical thermometer

E M B I B E

Learning Elementary Science for Class 7>Chapter 4 - Heat Flow and Temperature>EXERCISES>Q III

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7th CBSE

IMPORTANT

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Statement given below are incorrect. Write the correct statement.

Black bodies are good absorbers, but poor radiators of heat.

Important Questions on Heat Flow and Temperature

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7th CBSE

IMPORTANT

Learning Elementary Science for Class 7>Chapter 4 - Heat Flow and Temperature>EXERCISES>Q III

Statement given below are incorrect. Write the correct statement.

During heat radiation, the medium in between the hot body and the cold body becomes hot.

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Learning Elementary Science for Class 7>Chapter 4 - Heat Flow and Temperature>EXERCISES>Q III

Statement given below are incorrect. Write the correct statement.

Sea breeze blows during night time.

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7th CBSE

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Learning Elementary Science for Class 7>Chapter 4 - Heat Flow and Temperature>EXERCISES>Q III

Statement given below are incorrect. Write the correct statement.

Copper is an example of good insulator of heat

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7th CBSE

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Learning Elementary Science for Class 7>Chapter 4 - Heat Flow and Temperature>EXERCISES>Q IV

Match the statements in column A with those in column B.

Column A	Column B
1. Transmission of heat energy by actual movement of the molecules in a medium.	(a) Thermometer
2. A device which measures the degree of hotness.	(b) Clinical Thermometer
3. A thermometric scale used in the laboratory thermometer.	(c) Conduction
4. A process of transmission of heat which does not require any medium.	(d) Convection
5. A process of transmission of heat in which the particles of a medium do not move towards the source of heat.	(e) Radiation
6. A device used for measuring the temperature of the human body.	(f) Celsius