Class 6 Science - HARYANA
Temperature and its Measurement
In the chapter 'Temperature and its Measurement' for Class 6 Science under the Haryana Board (BSEH), students learn how to accurately measure hotness and coldness using a thermometer. The chapter covers the construction and working of a clinical thermometer used for human body temperature and a laboratory thermometer used for other objects. Students will also understand the standard units of temperature, the Celsius scale, and important safety precautions while handling glass thermometers. This chapter forms the foundation for higher-level physics and chemistry concepts, making it very important for scoring well in school examinations and building practical scientific skills.
Start Learning FreeKey Concepts
Temperature
Temperature is a reliable measure of the hotness or coldness of an object, usually measured using a unit called degree Celsius (°C).
Clinical Thermometer
A specialized glass thermometer used to measure human body temperature, with a normal range from 35°C to 42°C and a kink to prevent mercury level from falling on its own.
Laboratory Thermometer
A long glass thermometer used in science labs to measure the temperature of various substances and liquids, typically ranging from -10°C to 110°C.
Transfer of Heat
Heat flows naturally from a hotter object to a colder object until both reach the same temperature.
Celsius Scale
The standard temperature scale where the freezing point of water is marked as 0°C and the boiling point of water is marked as 100°C.
Important Formulas
Board Exam Info
In the Haryana Board (BSEH) Class 6 Science examinations, this chapter typically carries around 4 to 6 marks. Common question types include short answer questions about the difference between clinical and laboratory thermometers, fill-in-the-blanks regarding normal human body temperature, and diagram-based questions asking students to label parts of a thermometer.
Frequently Asked Questions
Why is a clinical thermometer not used to measure the temperature of boiling water?
A clinical thermometer has a limited range of 35°C to 42°C. If placed in boiling water (100°C), the mercury will expand too much and the glass bulb will break.
What is the purpose of the kink in a clinical thermometer?
The kink prevents the mercury level from falling down on its own when the thermometer is taken out of the patient's mouth, allowing for an accurate reading.
Why do we give a jerk to a clinical thermometer before use?
Giving a jerk brings the level of mercury down below 35°C so that we can take a fresh and accurate measurement.
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