Class 6 Science Chapter 7 Temperature and its Measurement Revision Notes

Chapter 7 introduces temperature as a measurable quantity, comparing the clinical thermometer used for the body against the wider-range laboratory thermometer — the key facts are gathered here.

Last Updated: September 23, 2026

Key Definitions

• Temperature: a reliable measure of the hotness or coldness of a body.
• Thermometer: a device used to measure temperature — clinical (body) and laboratory (general-purpose) types.

Clinical Thermometer

• Modern type: digital, battery-powered, heat-sensor based.
• Normal body temperature: 37.0°C (98.6°F) — an average value; individual normal can vary slightly.
• Body temperature usually stays between 35°C and 42°C.
• Armpit readings run 0.5–1°C lower than actual.
• Non-contact/infrared thermometers measure without touching the body.

Laboratory Thermometer

• Range: typically −10°C to 110°C.
• Correct use: vertical, bulb not touching the container, read while immersed, eye level with the liquid column.
• Temperature stays constant while water boils or ice melts.

Temperature Scales

• Celsius (°C), Fahrenheit (°F), Kelvin (K — the SI unit).
• Kelvin = Celsius + 273.15.
• Absolute zero ≈ −273.15°C (0 K).

Quick revision:

• Revision Notes for Class 6 Science Chapter 1: The Wonderful World of Science
• Class 6 Science Chapter 2 Diversity in the Living World Revision Notes
• Class 6 Science Chapter 3 Mindful Eating: A Path to a Healthy Body Revision Notes
• Class 6 Science Chapter 4 Exploring Magnets Revision Notes
• Class 6 Science Chapter 5 Measurement of Length and Motion Revision Notes
• Class 6 Science Chapter 6 Materials Around Us Revision Notes

Frequently Asked Questions

What is the difference between heat and temperature?
Heat is the energy that flows from a hotter object to a colder object, while temperature is a measure of how hot or cold an object is, indicating degree of hotness rather than total thermal energy.

What instrument is commonly used to measure temperature, and how does it work?
A thermometer is commonly used, and many types work because a liquid such as mercury or alcohol expands and rises in a narrow tube as temperature increases, providing a readable scale.

Written by Satish

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