Q: What is the SI unit of temperature?
A: The SI unit of temperature is kelvin (K).
Q: How can you convert temperature from Celsius to Kelvin?
A: Temperature in Kelvin = Temperature in Celsius + 273.15
Q: Why should the thermometer be read while it is still immersed in the substance being measured?
A: The temperature should be read while the thermometer is immersed because the liquid column begins to fall as soon as it’s taken out.
Q: What precaution should be taken when placing a thermometer in water?
A: The bulb of the thermometer should not touch the bottom or sides of the container.
Q: What is the correct way to hold a thermometer while reading it?
A: The thermometer should be held vertically, and the eye should be directly in line with the level of the liquid column.
Q: What happens to the temperature of water while it’s boiling?
A: The temperature of water remains constant while it is boiling.
Q: What happens to the temperature of ice while it’s melting?
A: The temperature of ice remains constant while it is melting.
Q: What is a room thermometer used for?
A: A room thermometer gives an approximate idea of the room temperature.
Q: Who was known as the ‘Weather Woman of India’?
A: Anna Mani was known as the ‘Weather Woman of India’.
Q: Why can’t a laboratory thermometer be used to measure body temperature?
A: A laboratory thermometer can’t be used to measure body temperature because its range is typically from -10°C to 110°C, which is too wide for precise body temperature measurements.
