Class 6 Science - TAMILNADU
Temperature and its Measurement
The chapter 'Temperature and its Measurement' in Class 6 Science introduces students to the basic concepts of heat and temperature. Students learn how to differentiate between hot and cold objects, understand the working principle of a clinical thermometer and laboratory thermometer, and explore the different temperature scales such as Celsius, Fahrenheit, and Kelvin. This chapter is vital for the Tamil Nadu Samacheer Kalvi board exams as it forms the foundation for higher-level physics concepts. Questions from this chapter frequently appear in both objective and short-answer formats, testing students' practical understanding of temperature conversion and thermometer reading.
Start Learning FreeKey Concepts
Temperature
Temperature is a measure of the degree of hotness or coldness of a body. The SI unit of temperature is Kelvin (K), though Celsius and Fahrenheit are commonly used.
Clinical Thermometer
A specialized glass thermometer used to measure human body temperature, typically ranging from 35°C to 42°C (94°F to 108°F).
Laboratory Thermometer
A device used to measure the temperature of various substances and liquids in a science laboratory, usually having a wider range from -10°C to 110°C.
Scales of Temperature
Temperature is measured in three main scales: Celsius (°C), Fahrenheit (°F), and Kelvin (K), each having specific freezing and boiling points of water.
Normal Human Body Temperature
The average healthy temperature of a human body is 37°C or 98.6°F.
Important Formulas
Board Exam Info
In the Tamil Nadu (Samacheer Kalvi) Class 6 Science examinations, this chapter typically carries about 5 to 8 marks. Questions usually include fill-in-the-blanks, true or false, matching the following, and short answer questions about the uses of clinical and laboratory thermometers.
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 removed from the patient's mouth, allowing an accurate reading.
Can a clinical thermometer be used to measure the temperature of boiling water?
No, because the temperature range of a clinical thermometer is only up to 42°C, and boiling water at 100°C would cause the glass bulb to break.
What is the SI unit of temperature?
The SI unit of temperature is Kelvin (K), named after Lord Kelvin.
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