NCERT Solutions for Class 6 Science Chapter 7 - Temperature and its Measurement

Ever wondered how we know if something is hot or cold or how we measure body temperature? Class 6 Science Chapter 7 Temperature and Its Measurement explains it all in a simple and in interactive way. You will learn how to use a thermometer understand units like degrees Celsius, and learn the right way to measure temperature.

The Careers360 NCERT Solutions for Class 6 Chapter 7 make these concepts very easy to understand with clear explanations and answers to all textbook questions. These solutions are prepared by expert faculty. These NCERT solutions are perfect for quick revision and it help you to prepare well for exams. Whether it is understanding the boiling point of water or how to read a thermometer, this chapter makes learning about temperature both fun and informative.

NCERT Solutions for Class 6 Science Chapter 7

Question 1. The normal temperature of a healthy human being is close to.........

(i) 98.6 °C

(ii) 37.0 °C

(in) 32.0 °C

(iv) 27.0 °C

Answer: The answer is option (ii), the normal temperature of a healthy human being is close to 37.0 °C.

Question 2. 37 °C is the same temperature as

(i) 97.4 °F

(ii) 97.6 °F

(iii) 98.4 °F

(iv) 98.6 °F

Answer: The answer is option (iv)

Formula for Celsius to Fahrenheit conversion:

°F = (°C * 9/5) + 32

= °F = ( 37*9/5) + 32

= 66.6 + 32

= 98.6 °F

Question 3. Fill in the blanks:

3 (i) The hotness or coldness of a system is determined by its _________

Answer: Temperature, Temperature tells us how cold or hot an object is.

3 (ii) The temperature of ice-cold water cannot be measured by a _________ thermometer.

Answer: clinical, because a clinical thermometer is designed to measure human body temperature, which ranges from 35°C to 42°C. Ice-cold water has a temperature around 0°C, which is below the lower limit of a clinical thermometer.

3 (iii) The unit of temperature is degree _________

Answer: Celsius, The unit of temperature in the metric system is degrees Celsius (°C).

Question 4. The range of a laboratory thermometer is usually

(i) 10 °C to 100 °C

(ii) -10 °C to 110 °C

(iii) 32 °C to 45 °C

(iv) 35 °C to 42 °C

Answer: Answer is option (ii) -10 °C to 110 °C.

The range of a laboratory thermometer is usually from –10°C to 110°C. This makes it suitable for experiments and scientific work where temperatures can vary a lot.

Question 5. Four students used a laboratory thermometer to measure the temperature of water as shown in the figure below

Who do you think followed the correct way for measuring temperature?

(i) Student 1

(ii) Student 2

(iii) Student 3

(iv) Student 4

Answer: Student 2, because the thermometer should be straight and should not touch the flask.

Question 6.

Colour to show the red column on the drawings of thermometers (Fig. below) as per the temperatures written below:

Answer: Red lines are marked alongside the respective thermometers for information.

For the first thermometer: 14 °C colour up to 2 small lines above mark 10, each small line indicates 2 degrees Celsius.

For the second thermometer: 17°C colour up to 7 small lines above mark 10, each small line indicates 1 degree Celsius.

For the third thermometer: 7.5°C colour up to 15 small lines above mark 0, each small line indicates 0.5 degrees Celsius.

Question 7. Observe the part of the thermometer shown in Fig. and answer the following questions:

(i) What type of thermometer is it?

(ii) What is the reading of the thermometer?

(in) What is the smallest value that this thermometer can measure?

Answer:

(i) This is a laboratory thermometer because the lowest mark on the thermometer is -10 °. The range of a laboratory thermometer is -10 °C to 110 °C.

(ii) The reading of the thermometer is 26 °C.

(iii) The thermometer can measure the smallest value of – 10°C because there are 10 small line marks between any 10-degree gap (0-10, 10-20, and so on) on the thermometer.

Question 8. A laboratory thermometer is not used to measure our body temperature. Give a reason.

Answer: A laboratory thermometer is not used to measure human body temperature because the lowest value of reading required to measure the human body temperature is 0.1 °C. If small markings of 0.1 °C are made on a range (-10 to 110°C) of a laboratory thermometer, the thermometer will be too long to handle for measuring human body temperature.

Question 9. Vaishnavi has not gone to school as she is ill. Her mother has kept a record of her body temperature for three days, as shown in the Table below

Table: Body temperature record of Vaishnavi

(i) What was Vaishnavi’s highest recorded temperature?

(ii) On which day and at what time was Vaishnavi’s highest temperature recorded?

(iii) On which day did Vaishnavi’s temperature return to normal?

Answer:

(i) Vaishnavi’s highest recorded temperature is 40.0 °C.

(ii) Vaishnavi’s highest temperature was recorded on day one, at 7 pm.

(iii) Vaishnavi’s temperature returns to normal on day three (The Temperature of a normal human body is always close to 37 °C).

Question 10. If you have to measure the temperature 22.5 °C, which of the following three thermometers will you use (Fig.)? Explain.

Answer: We will use thermometer (b). Because thermometer (b) has the markings on it to measure the smallest value of 0.5°C. Thermometer (a) can measure the smallest value of 1°C, thermometer (c) can measure the smallest value of 2°C.

Question 11. The temperature shown by the thermometer in Fig. is

(i) 28.0 °C

(ii) 27.5 °C

(iii) 26.5 °C

(iv) 25.3 °C

Answer: Answer is option (ii), 27.5 °C, we can see the red color on the thermometer. It is at the middle point between 25 and 30.

Question 12. A laboratory thermometer has 50 divisions between 0°C and 100°C. What does each division of this thermometer measure?

Answer: Given laboratory thermometer has a range from 0°C to 100°C with 50 divisions, so each division measures 2°C (we get this by 100/50).

Question 13. Draw the scale of a thermometer in which the smallest division reads 0.5 °C. You may draw only the portion between 10 °C and 20 °C.

Answer: The scale of a thermometer in which the smallest division reads 0.5 °C is given below.

Question 14. Komal tells you that she has a fever of 101 degrees. Does she mean it on the Celsius scale or the Fahrenheit scale?

Answer: She means the temperature on the Fahrenheit scale. Because the Human body temperature generally does not go below 35 °C or above 42 °C. The range of the Fahrenheit scale is between 95 degrees to 107.8 degrees.

Temperature and Its Measurement NCERT Class 6 Chapter 7: Topics

The NCERT chapter includes everything that a student needs to know about Temperature. Some major topics covered are.

• Hot or Cold?
• Temperature
• Measuring Temperature
• Clinical thermometer
• Laboratory thermometer
• Air temperature

Approach to solve the Class 7 Science Chapter 7

The Chapter 7: Temperature and its Measurement of Class 7 Science can be solved by first knowing what temperature is and why it is important. The chapter contains information on the scale of temperature (celsius and fahrenheit) as well as the devices used to measure it, including clinical and laboratory thermometers. The procedure to read a thermometer properly and some safety measures such as shaking the thermometer to ensure good reading and reading at eye level should be emphasized. Become familiar with the easy ways of converting a Celsius-Fahrenheit. Solve all NCERT exercises (in-text and end-of-chapter ones) in particular. Review key concepts such as boiling point, freezing point, and normal body temperature. Also, compare the subject to real-life scenarios and train on diagrams of thermometers, drawing and labelling them.

NCERT Solutions for Class 6 Science: Chapter-wise

Below are the chapter-wise solutions:

Also read,

Follow the link below to get your hands on the class 6 syllabus and the books recommended for it.

• NCERT Books Class 6
• NCERT Syllabus Class 6