Which set of temperature scales are correct?

• A. Celsius, Fahrenheit, Kelvin
• B. Fahrenheit, Celsius, Kelvin
• C. Kelvin, Fahrenheit, Celsius
• D. Fahrenheit, Kelvin, Celsius

Answer: (A)

The main point is recognizing the three most commonly used temperature scales: Celsius, Fahrenheit, and Kelvin. These are the standard scales you’ll encounter in science and everyday life, so listing all three together is the correct set. Kelvin is the SI base unit for thermodynamic temperature, Celsius is widely used in many countries and for weather and science, and Fahrenheit is still common in the United States for everyday temperature. The scales differ in where they zero and in how big a degree is, but they all serve to measure temperature, and all three appear together as the complete set. For reference, 0 °C equals 273.15 K, and 32 °F equals 0 °C, with 1 K differing from 1 °C by the same amount as 1 degree increment in Celsius.