Temperature and its Measurement | Class 6 Science Notes
By ConceptScroll Team · Published on 17 July 2026 · 4 min read
Temperature and its Measurement – this guide gives you a concise, exam-ready overview of Temperature and its Measurement from Class 6 Science, written by ConceptScroll editors and reviewed against the latest NCERT textbook.
7.3.2 Laboratory thermometer
Laboratory thermometers are used to measure temperatures beyond the range of clinical thermometers and for various scientific purposes. A typical laboratory thermometer consists of a long, narrow, uniform glass tube sealed at both ends. At one end is a bulb containing a liquid, usually alcohol (coloured red for visibility) or mercury. The liquid inside the tube forms a narrow column that rises or falls with temperature changes. Along the tube, a Celsius scale is marked. The temperature is read by noting the level of the liquid column against the scale. The range of a typical laboratory thermometer is from –10 °C to 110 °C, making it suitable for measuring temperatures of substances like boiling water and ice. To determine the smallest temperature value the thermometer can read, one observes the divisions between marked temperatures. For example, if the difference between two big marks is 10 °C and there are 10 smaller divisions between them, each small division represents 1 °C. Proper handling is essential to avoid breakage, and the thermometer should not be held by the bulb. When measuring temperature, the bulb should be immersed in the substance without touching the container's sides or bottom, and the thermometer should be held vertically. The temperature must be read while the thermometer is immersed, and the eye should be level with the liquid column to avoid parallax error.
📊 Diagram: Fig. 7.3(b): Closeup of a part of the thermometer shown in Fig. 7.3a.; Fig.7.4: Measuring temperature of warm water
🧪 Activity: Activity 7.3: Let us observe - Finding the temperature range of a laboratory thermometer; Activity 7.4: Let us observe and calculate - Determining the smallest value the thermometer can read; Activity 7.5: Let us measure - Measuring temperature of warm water correctly using a laboratory thermometer.
🔗 Connection: This section leads to understanding practical temperature measurements, including boiling and melting points, and the importance of correct reading techniques.
Table on page 5 (7×3)
| S. no. | Name | Temperature (°C) |
|---|---|---|
| 1. | ||
| . | ||
| . | ||
| . | ||
| . | ||
| 10. |
Table on page 11 (6×2)
| Name | Temperature of boiling water (in °C) |
|---|---|
| Phiban | 97.8 |
| Shemphang | 98.0 |
| Onestar | 97.9 |
| Kloi | 98.0 |
| Bandarisha | 98.1 |
Table on page 12 (5×4)
| S.no. | Date | Maximum air temperature | Minimum air temperature |
|---|---|---|---|
| 1. | |||
| . | |||
| . | |||
| 10. |
Table on page 17 (5×7)
| Temperature at | ||||||
|---|---|---|---|---|---|---|
| DAY | 7am | 10am | 1pm | 4pm | 7pm | 10pm |
| One | 38.0 °C | 37.8 °C | 38.0 °C | 38.0 °C | 40.0 °C | 39.0 °C |
| Two | 38.6 °C | 38.8 °C | 39.0 °C | 39.0 °C | 39.0 °C | 38.0 °C |
| Three | 37.6 °C | 37.4 °C | 37.2 °C | 37.0 °C | 36.8 °C | 36.6 °C |
Frequently asked questions
Find the odd one out with respect to food habit of animal.
Spider
A piece of metal is heated. Choose the incorrect statement for the given situation.
Piece of metal changes its shapes permanently and cannot be reversed
Choose the correct statement with respect to electric bulb.
In an electric bulb, light is produced by the thin filament present inside the bulb.
If we touch a wire having current, our body gets a shock. This suggest that ______.
Our body acts as an electrical conductor
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