Chapter 7 Temperature and its Measurement CBSE Class 6 Science Extra Questions and Answers

Understanding temperature is very important in our daily life. Sometimes we feel hot, and sometimes we feel cold, but do you know how we actually measure it? This is what we study in Temperature and its Measurement Class 6 Worksheet with Answers Science Chapter 7. The topic explains how temperature tells us how hot or cold an object is, and how instruments like thermometer help us to measure it correctly.

This temperature and its measurement class 6 worksheet helps students learn the basic concepts through activity-based questions, fill in the blanks, true or false and temperature and its measurement class 6 mcq. These are based on CBSE Class 6 Science Syllabus and also follow the NCERT Solutions for Class 6 Science.

By solving temperature and its measurement class 6 questions and answers, students can easily understand scales like Celsius and Fahrenheit. Students can also access to download temperature and its measurement class 6 worksheet with answers pdf to practice more at home.

Temperature and ITs Measurement Class 6 Worksheet PDF

Temperature and Its Measurement Class 6 Worksheet PDF is a short, resource that helps you understand what temperature means and how to measure it correctly using a thermometer. It explains basic ideas like hot and cold, Celsius and Fahrenheit scales, and the safe way to read a clinical thermometer.

CBSE Class 6 Science Chapter 7 Temperature and its Measurement Worksheets

Temperature and ITs Measurement Class 6 Questions and Answers MCQs

1. What device is used to measure temperature?

(a) Barometer

(b) Thermometer

(c) Ammeter

(d) Voltmeter

Ans: (b) Thermometer

Explanation: A thermometer is used to measure temperature in degrees Celsius, Fahrenheit, or Kelvin.

2. The normal human body temperature is approximately:

(a) 25°C

(b) 37°C

(c) 98.6°C

(d) 50°C

Ans: (b) 37°C

Explanation: Normal body temperature is around 37°C or 98.6°F.

3. The SI unit of temperature is:

(a) Celsius

(b) Fahrenheit

(c) Kelvin

(d) None

Ans: (c) Kelvin

Explanation: Kelvin is the SI unit of temperature.

4. Which thermometer is used to measure human body temperature?

(a) Laboratory thermometer

(b) Clinical thermometer

(c) Maximum thermometer

(d) Minimum thermometer

Ans: (b) Clinical thermometer

Explanation: It measures temperatures between 35°C and 42°C.

5. Mercury is commonly used in thermometers because it:

(a) Evaporates quickly

(b) Expands uniformly with temperature

(c) Sticks to the glass

(d) Is colorful

Ans: (b) Expands uniformly with temperature

6. Which temperature scale is commonly used in the USA?

(a) Celsius

(b) Kelvin

(c) Fahrenheit

(d) Rankine

Ans: (c) Fahrenheit

7. What happens to mercury when the temperature increases?

(a) It contracts

(b) It remains the same

(c) It expands

(d) It evaporates

Ans: (c) It expands

8. The boiling point of water is:

(a) 50°C

(b) 75°C

(c) 100°C

(d) 200°C

Ans: (c) 100°C

9. The freezing point of water is:

(a) 0°C

(b) 50°C

(c) -10°C

(d) 100°C

Ans: (a) 0°C

10. The range of a typical laboratory thermometer is:

(a) 0°C to 100°C

(b) -10°C to 110°C

(c) 35°C to 42°C

(d) 0°C to 50°C

Ans: (b) -10°C to 110°C

11. Infrared thermometers measure temperature:

(a) By touching object

(b) Without touching

(c) By air pressure

(d) By volume

Ans: (b) Without touching

12. Which liquid is used in alcohol thermometers?

(a) Mercury

(b) Alcohol

(c) Water

(d) Oil

Ans: (b) Alcohol

13. What is absolute zero temperature?

(a) -100°C

(b) -273.15°C

(c) 0°C

(d) 100°C

Ans: (b) -273.15°C

14. Which scale is used in laboratory scientific measurements?

(a) Fahrenheit

(b) Celsius

(c) Kelvin

(d) Rankine

Ans: (c) Kelvin

15. Body temperature is measured in which range in Celsius?

(a) 35°C to 42°C

(b) 0°C to 100°C

(c) -10°C to 110°C

(d) 20°C to 30°C

Ans: (a) 35°C to 42°C

Temperature and ITs Measurement Class 6 Very Short Answer Questions

1. Define temperature.

Ans: Temperature is the degree of hotness or coldness of an object.

2. Name the instrument used to measure temperature.

Ans: Thermometer.

3. What is the normal human body temperature?

Ans: 37°C or 98.6°F.

4. What are the units of temperature commonly used?

Ans: Celsius, Fahrenheit, Kelvin.

5. What liquid is used in clinical thermometers?

Ans: Mercury.

6. What is the freezing point of water?

Ans: 0°C.

7. What is the boiling point of water?

Ans: 100°C.

8. What is the SI unit of temperature?

Ans: Kelvin.

9. Name two types of thermometers.

Ans: Clinical thermometer and laboratory thermometer.

10. At what temperature does water freeze?

Ans: 0°C.

Temperature and ITs Measurement Class 6 Short Answer Questions

1. Why should we not shake a clinical thermometer?

Ans: Shaking a clinical thermometer can cause the mercury to spill or break the thermometer. It is designed to hold mercury at its maximum reading.

2. How does a mercury thermometer work?

Ans: Mercury expands on heating and contracts on cooling. This movement is shown on the scale to measure temperature.

3. What precautions should be taken while using a thermometer?

Ans: Wash the tip before and after use, do not shake it, keep it clean and handle gently.

4. Why is the Kelvin scale used in scientific measurements?

Ans: The Kelvin scale starts from absolute zero (-273.15°C), where all molecular motion stops. It is used for precise scientific work.

5. Explain the difference between clinical and laboratory thermometer.

Ans: A clinical thermometer measures body temperature with a small range, a laboratory thermometer measures wider temperature ranges for substances.

6. Describe how a thermometer reading is taken.

Ans: The mercury level is observed with the thermometer held at eye level and the temperature is read from the scale.

7. Why is alcohol sometimes used instead of mercury in thermometers?

Ans: Alcohol is safer because it does not evaporate rapidly and is less toxic than mercury.

8. What happens to mercury when the temperature falls?

Ans: Mercury contracts and moves down the tube.

9. How are temperature and heat different?

Ans: Temperature is how hot or cold something is; heat is energy transferred between objects due to temperature difference.

10. Why is temperature measurement important?

Ans: It helps in weather forecasting, medical diagnosis, and scientific experiments.

Higher Order Thinking Skills (HOTS) / Critical Thinking 

1. If the mercury in a thermometer does not rise when the temperature increases, what could be the reason?

Ans: The thermometer might be broken or the mercury could be stuck.

2. Why can't body temperature be measured with a laboratory thermometer?

Ans: Laboratory thermometers have a wider range but less precision in the narrow body temperature range and may cause harm as mercury is exposed more.

3. How would climate be affected if temperature measuring devices were inaccurate?

Ans: Weather prediction would fail, agricultural activities could be harmed, leading to loss of crops.

4. A fever thermometer shows a reading of 40°C. What precautions should the person take?

Ans: They should see a doctor as 40°C is a high fever indicating infection or illness.

5. Can we rely only on touch to measure temperature? Explain.

Ans: No, touch can be misleading because it depends on skin sensitivity and external factors.

6. What kind of thermometer would you choose to measure the temperature of boiling water and why?

Ans: A laboratory thermometer because it can measure high temperatures safely.

7. How does temperature affect the state of water? Explain with an example.

Ans: At 0°C water freezes into ice (solid), at 100°C it boils into steam (gas), and between these temperatures, it remains liquid.

8. Why is it important to have standard temperature scales?

Ans: So that temperature readings can be understood and compared worldwide.

9. Suppose a digital thermometer and mercury thermometer give different readings for the same water, which one would you trust and why?

Ans: Digital thermometer because it is usually more precise and less prone to human error.

10. If the mercury in a thermometer evaporates, how will it affect the temperature measurement?

Ans: It will give incorrect readings or no readings at all.

Competency/Case-Based Questions (CBQs)

1. In a school experiment, students measured water temperature as 10°C in cold water and 42°C in hot water.

a) Which thermometer would likely be used?

b) Why is mercury used for measurement?

Ans:

a) Laboratory thermometer

b) Mercury expands and contracts uniformly, making temperature measurement accurate.

2. Riya noted the weather temperature in her city is 38°C, while Shimla's temperature is 22°C.

a) What tool measures weather temperature?

b) Why does temperature vary in different places?

Ans:

a) Thermometer (specifically a weather or maximum-minimum thermometer)

b) Due to altitude, latitude, and atmospheric conditions.

3. A clinical thermometer is calibrated between 35°C to 42°C. Why is this range chosen?

Ans: This range covers all possible human body temperatures from low to high fever.

4. When measuring water temperature, the thermometer is placed vertically. Why?

Ans: To allow proper reading and avoid mercury pooling.

5. What safety measures should students take when handling thermometers?

Ans: Handle gently to prevent breakage, avoid direct contact with mercury, wash thoroughly.

6. How does an infrared thermometer work and where is it used?

Ans: It measures temperature from a distance by detecting thermal radiation, useful in medical and industrial contexts.

7. A laboratory thermometer shows reading up to 110°C but is used to measure bodies of water below 100°C safely. Why?

Ans: Its wide range allows it to measure various substances safely, including boiling points.

8. How does the temperature scale affect international scientific communication?

Ans: Standard scales ensure everyone understands temperature data uniformly.

9. A thermometer reading shows 98.6°F. Convert it to Celsius.

Ans: C = 5/9 (F-32) = 5/9 (98.6 - 32) = 37°C

10. Why is temperature recorded during chemical experiments?

Ans: To monitor reactions as temperature affects reaction speed and outcome.

Long Answer Questions Temperature and ITs Measurement Class 6

1. Explain what temperature is and how it is measured using a thermometer.

Ans: Temperature measures how hot or cold an object is. It is measured using a thermometer, which contains mercury or alcohol that expands or contracts according to temperature. The level of the liquid indicates the temperature on a calibrated scale.

2. Describe different types of thermometers and their uses.

Ans: Clinical thermometers measure body temperature (35°C-42°C), laboratory thermometers measure wider ranges (-10°C to 110°C) for scientific use. Infrared thermometers measure temperature without contact.

3. How does the mercury thermometer work? Explain its advantages and disadvantages.

Ans: Mercury expands when heated and moves up in the glass tube. Advantages: accurate and consistent. Disadvantages: mercury is toxic and can break, harming users.

4. What is the Celsius scale? How is it different from Fahrenheit and Kelvin?

Ans: Celsius scale defines 0°C as freezing water and 100°C as boiling water. Fahrenheit uses different points (32°F freezing, 212°F boiling). Kelvin starts at absolute zero and is used in science.

5. How can temperature impact daily life? Give examples.

Ans: Temperature affects weather, health (fever), cooking, and industry. For example, frost harms crops, high fever needs medical care.

6. Why is it important to measure body temperature accurately?

Ans: To detect fever or illness early for timely treatment.

7. Explain the proper method to use a clinical thermometer.

Ans: Clean the tip, shake mercury below 35°C, place under the tongue or armpit for 3-5 minutes, read the level accurately.

8. Describe the Kelvin scale and why it is used in science.

Ans: Kelvin starts at absolute zero (-273.15°C), where particle motion ceases, providing a base for thermodynamic measurements.

9. What safety steps should be followed while handling thermometers?

Ans: Avoid breakage, handle carefully, wash hands before and after use, dispose mercury carefully if broken.

10. Why is temperature measurement important in weather forecasting?

Ans: Temperature helps predict weather patterns, prepare for storms or heatwaves.