Test: Temperature and its Measurement - Class 6 MCQ

A digital thermometer uses heat sensors to measure temperature. These thermometers are quick, safe, and easy to read because they display the temperature on a digital screen. Unlike mercury or alcohol thermometers, digital thermometers do not contain harmful substances and are more commonly used today.

Temperature affects many aspects of our daily lives, and one important way it does so is by determining how food is cooked. The heat required to cook food, whether it's boiling, baking, or frying, depends on the temperature.

Eye color does not affect body temperature. However, factors like age, activity level, and time of day can influence body temperature. For example, body temperature may be slightly different for young children or older adults, and it can vary depending on whether you're active or resting, or what time of day it is.

A laboratory thermometer is commonly used to measure the temperature of liquids and other substances in scientific experiments. It is designed to accurately measure temperature in various laboratory settings.

On the Celsius scale, water boils at 100°C. This is the temperature at which water changes from a liquid to a gas (vapor).

A barometer is used to measure atmospheric pressure, not temperature. Clinical thermometers, mercury thermometers, and laboratory thermometers are all used to measure temperature.

Laboratory thermometers commonly use alcohol (often colored red) or mercury as the liquid inside the thermometer. These liquids expand and contract with temperature changes, allowing the thermometer to measure the temperature accurately.

The normal body temperature of a healthy human adult is around 37°C, although slight variations can occur depending on factors like time of day, activity level, and age.

On the Kelvin scale, the boiling point of water is 373.15 K. To convert from Celsius to Kelvin, you add 273.15 to the Celsius temperature, so 100°C becomes 373.15 K.

The Kelvin scale is most commonly used in scientific work. It starts at absolute zero and is used in many areas of science, especially physics.