Olympiad Test: Temperature & its Measurement - 1 - Class 6 MCQ

Temperature is the measure of how hot or cold something is. It tells us the amount of heat energy in an object. Higher temperature = more heat energy, lower temperature = less heat energy.

A metal spoon may feel colder than a wooden one, even if they are at the same temperature. Our touch is influenced by material type and our own body’s condition, so it is not always reliable.

Heat energy naturally moves from a hot body to a cold body until both reach the same temperature.

A thermometer is a scientific tool designed to measure temperature precisely using scales like Celsius, Fahrenheit, or Kelvin.

A clinical thermometer is used to measure body temperature. Modern ones are mostly digital, replacing mercury thermometers.

The average healthy human body temperature is 37 °C, which is equivalent to 98.6 °F.

Non-contact infrared thermometers became widely used as they could measure body temperature from a distance, reducing the risk of infection spread.

Digital thermometers are safer because they don’t use toxic mercury. They display results clearly and accurately.

The Kelvin (K) is the SI unit of temperature, used widely in scientific studies. Celsius and Fahrenheit are also common but not SI units.

To convert Celsius to Kelvin, add 273.15. Example: 25 °C = 25 + 273.15 = 298.15 K.