CBSE Class 6  >  Class 6 Notes  >  Science  >  Unit Test: Temperature and its Measurement

Unit Test Temperature And Its Measurement Extra Questions And Answers - Class 6 Science | Latest pattern

Attempt all questions. 
Time: 1 hour
M.M. 30

  • Question numbers 1 to 7 carry 1 mark each.
  • Question numbers 8 to 12 carry 2 marks each.
  • Question numbers 13 to 15 carry 3 marks each.
  • Question number 16 carries 4 marks each.

Q1: Which of the following is used to measure human body temperature? (1 Mark)
(i) 
Laboratory thermometer
(ii)
Digital clinical thermometer
(iii) 
Room thermometer
(iv) 
Barometer

Q2: The normal temperature of a healthy human body is __________. (1 Mark)

Q3: A hotter body has a __________ temperature than a colder body. (1 Mark)
(i) 
Lower
(ii)
Higher
(iii)
Equal
(iv) 
Unmeasurable

Q4: The device used to measure temperature is called a __________. (1 Mark)

Q5: What liquid is generally used in a laboratory thermometer? (1 Mark)
(i) 
Water
(ii) 
Mercury or alcohol
(iii)
Oil
(iv) 
Milk

Q6: Name the temperature scale that is the SI standard unit for temperature. (1 Mark)

Q7: Who is known as the ‘Weather Woman of India’? (1 Mark)

Q8: Why can’t we always rely on our sense of touch to decide if an object is hot or cold? (2 Marks)

Q9: State two precautions to be taken while using a laboratory thermometer. (2 Marks)

Q10: How does a laboratory thermometer indicate temperature changes? (2 Marks)

Q11: Why are digital thermometers preferred over mercury thermometers? (2 Marks)

Q12: Describe the steps to measure your body temperature using a digital clinical thermometer. (3 Marks)

Q13: Explain why the temperature of boiling water remains constant during boiling. (3 Marks)

Q14: Discuss the role of air temperature in weather forecasting, mentioning one key contributor. (3 Marks)

Q15: A laboratory thermometer has 50 divisions between 0 °C and 100 °C. What does each division of this thermometer measure? (3 Marks)

Q16: Compare the features and uses of a clinical thermometer and a laboratory thermometer, including one limitation each. (4 Marks)

You can find the solutions of this Unit Test here: Unit Test (Solution): Temperature and its Measurement

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FAQs on Unit Test: Temperature and its Measurement

1. What is temperature and why is it important in our daily lives?
Ans.Temperature is a measure of how hot or cold something is, typically quantified in degrees Celsius (°C), Fahrenheit (°F), or Kelvin (K). It is important in our daily lives because it affects weather, cooking, and health. For instance, knowing the temperature helps us dress appropriately for the weather, ensures food is cooked safely, and helps in understanding how our bodies respond to heat and cold.
2. What are the different scales of temperature measurement?
Ans.The three primary scales of temperature measurement are Celsius, Fahrenheit, and Kelvin. The Celsius scale is commonly used in most countries for everyday temperature measurement. The Fahrenheit scale is mainly used in the United States. Kelvin is primarily used in scientific contexts and is based on absolute zero, the point at which molecular motion stops.
3. How do we measure temperature accurately?
Ans.Temperature can be measured using various instruments, with the most common being thermometers. Liquid-in-glass thermometers contain mercury or colored alcohol that expands and contracts with temperature changes. Digital thermometers provide quick and accurate readings. For scientific purposes, thermocouples and infrared thermometers are also used to measure temperature accurately.
4. What is the concept of absolute zero and its significance?
Ans.Absolute zero is the theoretical temperature at which a system's entropy reaches its minimum value, and molecular motion ceases completely. It is defined as 0 K on the Kelvin scale, which is equivalent to -273.15 °C. This concept is significant as it provides a reference point for the thermodynamic temperature scale and helps scientists understand the behavior of matter at extremely low temperatures.
5. How does temperature affect the states of matter?
Ans.Temperature plays a crucial role in determining the state of matter—solid, liquid, or gas. As temperature increases, solids can melt into liquids, and liquids can evaporate into gases. Conversely, lowering the temperature can lead to condensation of gases into liquids and freezing of liquids into solids. This relationship is fundamental in physics and chemistry, influencing various processes in nature and industry.
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