Give examples for situations where temperature is measured and in how many ways. What are the different instruments used and how is temperature expressed in different ways?
Answers
Answer:Temperature is a physical property of matter that quantitatively expresses hot and cold. It is the manifestation of thermal energy, present in all matter, which is the source of the occurrence of heat, a flow of energy, when a body is in contact with another that is colder.
Temperature is measured with a thermometer. Thermometers are calibrated in various temperature scales that historically have used various reference points and thermometric substances for definition. The most common scales are the Celsius scale (formerly called centigrade, denoted °C), the Fahrenheit scale (denoted °F), and the Kelvin scale (denoted K), the latter of which is predominantly used for scientific purposes by conventions of the International System of Units (SI).
Explanation:
Situations to measure temperature:
- The temperature is majorly measured to quantify the coldness and hotness of a material.
- The temperature of the air and body is measured for biological and technical purpose.
Ways to measure temperature:
The temperature is measured by inserting the thermometer into body or object or placing the instrument in the space to measure the temperature of air.
Different instruments to measure temperature:
- Thermocouples
- Thermistors
- Resistance temperature detector
- Pyrometer
- Langmuir probes
- Infrared thermometer
Units to express temperature:
- Kelvin (K)
- Fahrenheit (°F)
- Celsius (°C)