Class 6 Science - RAJASTHAN
Temperature and its Measurement
In the Class 6 Rajasthan Board Science chapter 'Temperature and its Measurement', students learn about the concept of hotness and coldness and how to measure it accurately. The chapter introduces the clinical thermometer used by doctors and the laboratory thermometer used in science experiments. Students will understand the Celsius and Fahrenheit scales, how heat transfers, and the importance of precautions while handling glass thermometers. This chapter is vital for the board exams as it builds the foundational understanding of thermal physics, commonly testing students on thermometer readings, normal human body temperature, and practical applications in daily life.
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 glass thermometer used to measure human body temperature, typically ranging from 35°C to 42°C.
Laboratory Thermometer
A thermometer used in school laboratories to measure the temperature of various objects and liquids, usually having a range from -10°C to 110°C.
Normal Body Temperature
The normal temperature of a healthy human body is 37°C or 98.6°F.
Transfer of Heat
Heat flows naturally from a hotter object to a colder object until both reach the same temperature.
Important Formulas
Board Exam Info
This chapter usually carries 4 to 6 marks in the Rajasthan Board Class 6 Science examinations. Common question types include short answer questions about the uses of clinical and laboratory thermometers, fill-in-the-blanks regarding normal body temperature, and diagram-based questions asking to draw or label a thermometer.
Frequently Asked Questions
Why do we jerk a clinical thermometer before use?
We jerk a clinical thermometer to bring the level of mercury down below 35°C so that it shows the correct current body temperature.
Can we use a laboratory thermometer to measure our body temperature?
No, because as soon as you take a laboratory thermometer out of your mouth, the mercury level starts falling rapidly, making it inaccurate for body temperature.
Why does mercury filled in thermometers rise when heated?
Mercury expands when it receives heat, which causes the liquid to rise up the narrow glass tube of the thermometer.
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