Olympiad Test: Temperature & its Measurement - 2 - Class 6 MCQ

Ancient methods included checking pulse rate, as a fast pulse was linked to fever. However, it was not very accurate because other factors can also increase pulse.

A laboratory thermometer is designed for experiments. It can measure from –10 °C to 110 °C, covering a wide range.

Mercury and coloured alcohol are used because they expand and contract with temperature changes, making readings visible.

Alcohol in thermometers is often coloured red so that the liquid column is easy to see against the glass scale.

Laboratory thermometers usually measure from –10 °C to 110 °C, useful for boiling and freezing points of substances.

The thermometer should be kept upright for accurate readings. It must not be shaken or held by the bulb, as this can alter results.

On the Celsius scale, water freezes at 0 °C and boils at 100 °C under normal atmospheric pressure.

The normal body temperature of 37 °C is equal to 98.6 °F.

Anna Mani was an Indian scientist who developed weather measurement instruments and reduced India’s dependence on imported equipment.

Weather stations use thermometers to record air temperature, which is crucial for weather forecasting.