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# Solutions 4. Heat - Additional Questions with Answers | Class 7 Science - Toppers Study

Topper Study classes prepares ncert solutions on practical base problems and comes out with the best result that helps the students and teachers as well as tutors and so many ecademic coaching classes that they need in practical life. Our ncert solutions for Solutions 4. Heat - Additional Questions with Answers | Class 7 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.

## Solutions 4. Heat - Additional Questions with Answers | Class 7 Science - Toppers Study

CBSE board students who preparing for class 7 ncert solutions maths and Science solved exercise chapter 4. Heat available and this helps in upcoming exams 2023-2024.

### You can Find Science solution Class 7 Chapter 4. Heat

• All Chapter review quick revision notes for chapter 4. Heat Class 7
• NCERT Solutions And Textual questions Answers Class 7 Science
• Extra NCERT Book questions Answers Class 7 Science
• Importatnt key points with additional Assignment and questions bank solved.

Chapter 4 Science class 7

### Additional Questions with Answers class 7 Science Chapter 4. Heat

Sure! The following topics will be covered in this article

• Solutions 4. Heat - Additional Questions With Answers | Class 7 Science - Toppers Study
• Class 7 Ncert Solutions
• Solution Chapter 4. Heat Class 7
• Solutions Class 7
• Chapter 4. Heat Additional Questions With Answers Class 7

## Solutions 4. Heat - Additional Questions with Answers | Class 7 Science - Toppers Study

Que. – What is thermometer?

Ans. – A device which is used for recording temperature is known as thermometer.

Que. – What is clinical thermometer?

Ans. - A device which is used for recording body temperature is known as clinical thermometer.

Que. – What is the temperature of normal body?

Ans. – 37 °C

Que. – Which thermometer do not use mercury?

Ans. – Digital thermometer.
Que. – What is the range of clinical thermometer?

Ans. – 37 °C to 42 °C.

Que. – What is laboratory thermometer?

Ans. – The temperature of some other things are measured by a special kind of thermometer. Which range is generally –10°C to 110°C is known as laboratory thermometer.

Que. –Why should we use antiseptic solution to wash out the thermometer?

Ans. – After using the thermometer it get infected or may be isolated with germs.  So we use antiseptic solution to wash out the thermometer.

Que. – What is conduction?

Ans. – The process by which heat is transferred from the hotter end to the colder end of an object is known as conduction.

Que. – Why does a metallic pot get heated when we kept it on a flame?

Ans. – Due to conduction.

Que. – How does the sun’s heat reaches to us?

Ans. – The heat of the sun reaches us by radiation.

Que. – What is convection?

Ans. – The process of transferring of heat in liquid like water is known as convection.

Que. – Define conductor of heat? Write with examples.

Ans. – The materials which allow to pass the heat from themselves easily are  known as conductor of heat. EX. – copper, Iron, almunium etc.

Que. – Define bad conductor of heat with examples.

Ans. – the materials which does not allow to pass the heat from themselves are known as bad conductor of heat. Ex – wood, plastics etc.

Que. – What is radiation?

Ans. – The process of transferring the heat which does not need any medium is known as radiation. Ex – reaching the heat of the sun to us.

Que. – What are the modes to transfer the heat?

Ans. – There are three modes

(i)  Conduction

(ii) Convection

Que. – Why does it seem comfortable to put on deep coloured clothes in winter?

Ans. – The deep coloured surface usually absorbs more heat, so putting on deep coloured clothes in winter is comfortable.

Que. – Which colour absorbs more heat?

Ans. – Black.

Que. – Why should we put on the white dress in summer?

Ans. – Light colour or white dress reflects the most of the heat radiation and absorbs less heat so that it keeps us comfortable.

Que. – Why do woolen clothes keep us warm in winter?

Ans. - woolen clothes keep us warm in winter because the wool is bad conductor of heat. The airs trap among its fibers.

Que. – by which mode of transferring of heat will take place in copper?

Ans. – conduction.

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