Class 6 Science - CBSE
Temperature and its Measurement
In the Class 6 CBSE chapter 'Temperature and its Measurement', students explore the fundamental concept of hotness and coldness and learn how to quantify it scientifically. The chapter introduces the construction and working of a clinical thermometer and a laboratory thermometer, highlighting their specific uses and temperature ranges. Students learn the correct method of reading a thermometer, precautions to take while handling glass thermometers, and the concept of standard units like Celsius. This chapter is crucial for board exams as it forms the basis for future physics and chemistry chapters on heat transfer and thermodynamics.
Start Learning FreeKey Concepts
Temperature
Temperature is a reliable measure of the hotness or coldness of an object, measured using a device called a thermometer.
Clinical Thermometer
A specialized thermometer used to measure human body temperature, typically ranging from 35°C to 42°C, featuring a kink to prevent the mercury level from falling on its own.
Laboratory Thermometer
A thermometer used to measure temperatures of objects other than the human body in a science lab, usually having a wider range from -10°C to 110°C.
Celsius Scale
The standard metric scale for measuring temperature, where 0°C is the freezing point of water and 100°C is the boiling point of water.
Transfer of Heat
Heat always flows from a hotter object to a colder object until both reach the same temperature.
Important Formulas
Board Exam Info
In CBSE Class 6 Science exams, this chapter typically carries about 4 to 6 marks. Common question types include short-answer questions on precautions while using a clinical thermometer, differentiating between clinical and laboratory thermometers, and numerical or conceptual questions based on temperature readings.
Frequently Asked Questions
Why is a kink present in a clinical thermometer?
The kink prevents the mercury level from falling down on its own after the thermometer is taken out of the patient's mouth, allowing for an accurate reading.
Can we use a laboratory thermometer to measure human body temperature?
No, because as soon as you take a laboratory thermometer out of the mouth, the mercury level starts falling rapidly, giving an incorrect reading.
Why do we jerk a clinical thermometer before use?
Jerking the thermometer forces the mercury column to flow down below the normal mark, ensuring the previous reading does not affect the new measurement.
Learn Temperature and its Measurement with Your AI Tutor
10 different ways to study this chapter. Free for 3 chapters per day.
Lecture
Key Points
Interactive
Quiz
Flashcards