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

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

Temperature and its Measurement Class 6 Very Short Answer Type Questions

Question 1.
What is temperature?
Answer:
Temperature is a measure of how hot or cold something is.

Question 2.
Which instrument is commonly used to measure1’temperature?
Answer:
A thermometer

Question 3.
What unit is used to measure temperature in the metric system?
Answer:
Celsius

Question 4.
At what temperature does water freeze in Celsius?
Answer:
0 °C

Question 5.
What is the boiling point of water in Fahrenheit?
Answer:
212 °F

Question 6.
What material expands when heated and contracts when cooled, making it useful in thermometers?
Answer:
Mercuiy

Question 7.
What does the term “room temperature” typically refer to?
Answer:
Around 20 – 25 °C

Question 8.
What is the main advantage of using the Kelvin Scale?
Answer:
It avoids negative temperatures.

Question 9.
What is the SI unit for temperature?
Answer:
Kelvin

Question 10.
What is the primary purpose of a clinical thermometer?
Answer:
Clinical thermometers are specifically designed to measure human body temperature accurately.

Temperature and its Measurement Class 6 Short Answer Type Questions

Question 1.
How does a clinical thermometer differ from a regular household thermometer?
Answer:
Clinical thermometers are more precise and have a narrower temperature range for accurate body temperature measurement than regular household thermometer.

Question 2.
What part of the body is the most common site for measuring body temperature using a clinical thermometer?
Answer:
The oral cavity (under the tongue)

Question 3.
What is the purpose of the coloured band or line on a clinical thermometer?
Answer:
It indicates the normal body temperature range (usually around 37°C or 98.6°F).

Question 4.
What precautions should be taken when using a clinical thermometer?
Answer:
Precautions that should be taken:

• Thermometers are especially fragile and can break easily so, handle the thermometer gently to avoid damage.
• Clean the thermometer before and after every use.

Question 5.
What is the advantage of using an alcohol-filled thermometer over a mercury thermometer?
Answer:
Alcohol is safer and less toxic than mercury.

Question 6.
What is the name of the scale used on alcohol-filled thermometers?
Answer:
The Celsius (°C) scale

Question 7.
What is the typical length of a clinical thermometer?
Answer:
Around 12 to 15 centimeters (5 to 6 inches)

Question 8.
What is the term for the highest temperature recorded during a fever?
Answer:
The maximum temperature

Question 9.
What is the name of the part of the thermometer where the temperature is displayed?
Answer:
The scale or the graduated markings

Question 10.
What is the purpose of the bulb at the end of a clinical thermometer?
Answer:
The bulb is filled with mercury which expands on heating and is used to measure temperature.

Temperature and its Measurement Class 6 Long Answer Type Questions

Question 1.
What is clinical thermometer? Explain with diagram.
Answer:
The most common thermometer used to measure body temperature is called a clinical thermometer.

There are three types of clinical thermometres:

• Mercury, digital and infrared thermometres.
• Mercury expands on heating and helps in measuring temperature.
• Digital thermometres work on batteries.
• Infrared thermometres are non-contact thermometres, that can measure temperature without touching the body.

Question 2.
What is laboratory thermometer?
Answer:
The thermometer which is used to measure the temperature of objects in laboratory is called laboratory thermometer. The range is -10°C to 110°C. It also contains a thread of mercury.

Question 3.
What are the precautions needed while reading a laboratory thermometer?
Answer:

• The thermometer should be kept upright not tilted.
• Bulb should be surrounded from all sides by the substance of which the temperature is to be measured.
• The bulb should not touch the surface of the container.

Question 4.
Why do we use mercury in the thermometer in place of water?
Answer:

• Mercury expands more than water.
• Mercury does not stick to the walls of the thermometer like water.
• Mercury can be easily collected when thermometer breaks.
• It shines more than water and can be seen easily in thin glass tube of the thermometer

Question 5.
Explain an activity to show the measuring of temperature of water with laboratory thermometer.
Answer:

Take some hot water in a beaker. Dip the thermometer in water as shown in the figure.
Keep it for sometime in the water till the mercury thread becomes steady. Note the temperature of hot water.

Temperature and its Measurement Class 6 Skill-Based Questions

Question 1.
Observe the following figure and tell what does this figure show?

(i) In this figure, we see that a girl is reading the temperature in a thermometer.
(ii) This is a correct method of reading a clinical thermometer.

Question 2.
Lisa wants to measure the temperature of her cup of hot tea before drinking it. She uses a thermometer and finds that the temperature is 70 °C. Her friend says that the temperature in Fahrenheit would be helpful to understand how hot it is.
Can you help Lisa convert the temperature from Celsius to Fahrenheit?

Answer:
Use the formula:
°F =(°C × 9/5) + 32

Steps to Solve:
(i) Multiply the Celsius temperature by 9/5.
(ii) Add 32 to the result.
°F =(70°C × 9/5) + 32 = 158 °F
The temperature of the tea in Fahrenheit is 158 °F.

Temperature and its Measurement Class 6 Case-Based Questions

Question 1.
Honey and Soni measured their body temperature. They tried to find the body temperature by using different scales. Honey found her temperature to be 98.6°F and Soni recorded 37°C.
I. Do both have a normal body temperature?
II. Which metal is used for making the bulb of clinical thermometer?
III. Two containers, A and B are having water at 100°C. Container B is covered with a woollen cloth. Which container cools faster?
IV. What do °F and °C stand for?
Answer:
I. Yes, both indicate normal body temperature.
II. Mercury
III. Container ‘A’ cools faster. When container ‘B’ is wrapped in a woolen cloth, the air trapped in the woolen cloth acts as an insulator, preventing heat from escaping. ”
IV. °F represent Fahrenheit and °C represent Celsius.

Question 2.
Lucy and Tom are students in class 6. They are learning about temperature and how to measure it using thermometers. One day, their teacher gave each of them a thermometer to measure the temperature outside the school. Lucy’s thermometer shows 25°C, but Tom’s thermometer shows 27°C. They are confused because they both used the thermometers in the same way.
I. Why do the temperatures on Lucy and Tom’s thermometers differ?
II. How can they find out which thermometer is correct?
III. Explain one method they could use to measure the temperature more accurately.
IV. Which substance is commonly used in a thermometer to measure temperature?
Answer:
I. They were placed in different locations.
II. Take multiple readings and average them.
III. Use a digital thermometer
IV. Mercury

Class 6 Science Extra Questions