Temperature and its measurement

Temperature

A measure of how hot or cold an object is

Thermometer

An instrument used to measure temperature

Clinical Thermometer

A thermometer used to measure human body temperature

Laboratory Thermometer

A thermometer used in science experiments to measure temperature of substances

Non-contact Thermometer

A thermometer that measures temperature without touching the body using infrared rays

Celsius Scale

A temperature scale in which temperature is measured in degrees Celsius (°C)

Fahrenheit Scale

A temperature scale in which temperature is measured in degrees Fahrenheit (°F)

Kelvin Scale

The SI temperature scale used in science, measured in kelvin (K)

SI Unit of Temperature

Kelvin (K)

Normal Human Body Temperature

37 °C or 98.6 °F

Conversion of Celsius to Kelvin

Temperature in kelvin = temperature in Celsius + 273.15

Mercury Thermometer

A thermometer that uses mercury to measure temperature but is unsafe due to toxicity

Digital Thermometer

A safe thermometer that uses heat sensors and shows temperature digitally

Laboratory Thermometer Range

–10 °C to 110 °C

Liquid Used in Laboratory Thermometer

Mercury or alcohol

Capillary Tube

A thin glass tube in a laboratory thermometer through which the liquid rises

Bulb

The part of a thermometer that contains the liquid

Liquid Column

The visible line of liquid that moves up or down to show temperature

Precaution While Using Lab Thermometer

Do not hold it by the bulb

Air Temperature

The measure of how hot or cold the air around us is

Instrument Used to Measure Air Temperature

Thermometer