Extra Questions for Chapter 7 Temperature and its Measurement Class 6 Science Curiosity
Class 6 Science Temperature and its Measurement Extra Questions
Multiple Choice Questions (MCQ)
Question 1. What is the primary purpose of a thermometer?
(a) To measure pressure
(b) To measure temperature
(c) To measure humidity
(d) To measure distance
Answer
(b) To measure temperature
Question 2. Which thermometer is commonly used to check body temperature?
(a) Laboratory Thermometer
(b) Clinical Thermometer
(c) Mercury Thermometer
(d) Digital Scale
Answer
(b) Clinical Thermometer
Question 3. Which scale uses degrees Fahrenheit?
(a) Celsius Scale
(b) Kelvin Scale
(c) Fahrenheit Scale
(d) Thermometric Scale
Answer
(c) Fahrenheit Scale
Question 4. What liquid is often used in laboratory thermometers?
(a) Water
(b) Alcohol
(c) Mercury
(d) Both b and c
Answer
(d) Both b and c
Question 5. What happens to the temperature during summer?
(a) It decreases
(b) It stays the same
(c) It increases
(d) It fluctuates randomly
Answer
(c) It increases
Fill in the Blanks
1. The device used to measure temperature is called a _____.
2. The Celsius scale is represented by the symbol _____.
3. ____ thermometers are used in scientific settings.
4. A temperature of 0 degrees Celsius is equivalent to ____ Kelvin.
5. The temperature in ____ is usually higher than in winter.
Answer
1. thermometer
2. °C
3. Laboratory
4. 273.15
5. summer
True or False
1. A clinical thermometer is used to measure air temperature. (True/False)
2. The Kelvin scale is the SI unit for temperature. (True/False)
3. Mercury thermometers are safe to use and do not pose any risks. (True/False)
4. We can always trust our sense of touch to determine temperature accurately. (True/False)
5. The Fahrenheit scale is becoming more common in scientific studies. (True/False)
Answer
1. False
2. True
3. False
4. False
5. False
Match the Following
|
Column A |
Column B |
|
A) Celsius |
1) 273.15 |
|
B) Mercury |
2) Digital thermometer |
|
C) Clinical thermometer |
3) Body temperature |
|
D) Laboratory thermometer |
4) Toxic substance |
|
E) Kelvin |
5) Temperature scale |
Answer
|
Column A |
Column B |
|
A) Celsius |
5) Temperature scale |
|
B) Mercury |
4) Toxic substance |
|
C) Clinical thermometer |
3) Body temperature |
|
D) Laboratory thermometer |
2) Digital thermometer |
|
E) Kelvin |
1) 273.15 |
One Word Answer
Question 1. What device is used to measure temperature?
Answer
Thermometer
Question 2. What does a higher temperature indicate?
Answer
Hot
Question 3. What is the formula to convert Celsius to Kelvin?
Answer
K = °C + 273.15
Question 3. Name one type of thermometer.
Answer
Clinical thermometer
Question 4. What scale is commonly used for body temperature?
Answer
Celsius scale
Question 5. What temperature measurement is commonly used in the U.S.?
Answer
Fahrenheit scale
Question 6. What is the unit for temperature in the Kelvin scale?
Answer
Kelvin (K)
Question 7. What liquid is often used in laboratory thermometers?
Answer
Alcohol or mercury
Question 8. What liquid is generally used in laboratory thermometers?
Answer
Alcohol or mercury
Question 9. What is the SI unit of temperature?
Answer
Kelvin (K) Question 5.
What is the boiling point of water in Fahrenheit?
Answer:
212 °F
Question 10. Which type of thermometer uses heat sensors to measure temperature?
Answer
Digital thermometer.
Question 11. What type of thermometer is commonly used to measure human body temperature?
Answer
Clinical thermometer
Question 12. What unit is used to measure temperature in the metric system?
Answer
Celsius
Question 13. At what temperature does water freeze in Celsius?
Answer
0 °C
Question 14. What is the smallest value a laboratory thermometer can read according to the text?
Answer
-10°C.
Very Short Answer Questions
Question 1. Can a clinical thermometer measure the temperature of boiling water?
Answer
No. Boiling water has a temperature of 100°C, while the clinical thermometer has a range of 35 °C to 42 °C only.
Question 2. What does temperature measure?
Answer
Temperature measures how hot or cold an object is.
Question 3. Can our sense of touch always accurately determine temperature?
Answer
No, our sense of touch can be misleading.
Question 4. What happens to air temperature in summer?
Answer
Air temperature generally increases.
Question 5. How do digital thermometers display temperature?
Answer
They display temperature on a digital screen.
Question 6. What is a common issue with mercury thermometers?
Answer
They contain toxic mercury.
Question 7. What indicates a fever in terms of body temperature?
Answer
A body temperature above 37.5 °C.
Question 8. Are temperatures the same every day?
Answer
No, they vary daily.
Question 9. What is the risk of a broken mercury thermometer?
Answer
Mercury exposure is toxic.
Question 10. What colour is alcohol in a thermometer?
Answer
Often red for visibility.
Question 11. Where are thermometers commonly used?
Answer
In schools, clinics, and hospitals.
Question 12. What does the Celsius scale measure?
Answer
It measures temperature in degrees Celsius (°C).
Question 13. What can affect body temperature variations?
Answer
Age, activity level, and time of day.
Question 14. What temperature range does a digital clinical thermometer typically cover?
Answer
A digital clinical thermometer typically covers a temperature range from 32°C to 43°C.
Question 15. What is the normal temperature of a healthy human body in Celsius?
Answer
The normal body temperature for a healthy adult is approximately 37°C.
Question 16. Can a clinical thermometer be used to measure the temperature of boiling water?
Answer
No, because its temperature range does not extend to the temperature of boiling water.
Question 17. How is the Kelvin scale related to the Celsius scale?
Answer
The Kelvin scale is related to the Celsius scale by the formula:
Temperature in Kelvin = Temperature in Celsius + 273.15.
Short Answer Questions
Question 1. 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 2. How does a clinical thermometer work, and why should it not be used to measure temperatures outside the human body?
Answer
A clinical thermometer measures temperature using heat sensors or mercury expansion. It should not be used to measure temperatures outside the human body because it is calibrated only within the human body temperature range.
Question 3. What did people use to detect fever before thermometers were developed?
Answer
Before thermometers, people used to detect fever by checking the pulse rate, as fever affects it. However, this method was not very reliable since conditions other than fever could also influence the pulse rate.
Question 4. Explain the precautions that need to be taken while using a digital clinical thermometer.
Answer
Precautions include washing the tip with soap and water before and after use, not holding the thermometer by the tip, and ensuring the digital display does not come into contact with water.
Question 5. 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 6. How should a clinical thermometer be cleaned before use?
Answer
A clinical thermometer should be cleaned with an antiseptic solution or alcohol swab before use to ensure it is hygienic.
Question 7. What is the role of weather stations in measuring air temperature?
Answer
Weather stations monitor air temperature along with other parameters to gather data used for weather forecasting. This data collection helps predict weather patterns and informs the public about daily temperature variations and climate trends.
Long Answer Questions
Question 1. What smallest value of temperature can we measure on a laboratory thermometer?
Answer
Different laboratory thermometers give different measures of the smallest value of temperature. This depends on the scale markings on the thermometer. In some thermometers 5 small lines are marked between any 10 (10 – 20 or 20 – 30 degrees) degrees. The smallest value of temperature of 2 degrees is measured on these. When a thermometer has 20 small lines between any 10 degrees. The smallest value of temperature of 0.5 degrees is measured on these.
Question 2. Explain the principle behind the Kelvin scale and its significance in scientific measurements.
Answer
Scientifically there is no limit on the higher temperature that can exist. The highest temperature known is about 15 million degrees Celsius at the core of the Sui*. There can be more celestial objects having higher temperatures. The lowest temperature that can exist, till date known to the scientists, is close to -273 °C. On the Kelvin scale this lowest temperature of-273 °C is taken as 0 kelvin. 0 kelvin is also called absolute zero.
Question 3. 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 4. Describe the differences between thermometers in terms of their use and range.
Answer
|
Clinical Thermometers |
Laboratory Thermometers |
|
Clinical thermometers are designed specifically for measuring human body temperature. |
Laboratory thermometers are used for a variety of scientific purposes. |
|
They typically have a limited range, from around 35 °C to 42 °C, which is sufficient for detecting fevers and other health-related temperature variations. |
Laboratory thermometers can measure a much wider range of temperatures, usually from-10 °C to 110 °C. |
|
Clinical thermometers are used to take readings of body temperatures on Celsius or sometimes on Fahrenheit scale. |
Laboratory thermometers are used to take readings of temperatures on Celsius scale or on Kelvin scale. |
|
Clinical thermometers can be mercury thermometers, digital thermometers or non-contact infrared thermometers. |
Laboratory thermometers use coloured alcohol or mercury as liquids that expand to show the temperatures readings. |
Question 5. Describe how air temperature data is used in making weather forecasts.
Answer
Air temperature data is an important component in weather forecasting as it influences atmospheric pressure, humidity, and wind patterns. Temperature data from various sources, including weather stations, satellites, and weather balloons is collected. This data is fed into computer models that analyse atmospheric conditions. Accurate temperature measurements allow forecasting of changes in weather, such as cold fronts, heatwaves, and rain. This information is very useful for agriculture, transportation, and public safety.