Temperature

Temperature

• The temperature $T$ of an object is how hot or cold it is.
• It is either measured in degrees Celsius (°C) or in Kelvin (K).
• To convert from degrees Celsius to Kelvin, add 273: 10°C = 283K.
• To convert from Kelvin to degrees Celsius, subtract 273: 300K = 27°C.
• If $T$ appears in a formula by itself, then you must use Kelvin in that formula.

Temperature Change

• Temperature changes or temperature differences are both represented by $\mathrm{\Delta }T$, which is equal to $T_f-T_i$.
• It is either measured in Celsius degrees (C°) or in Kelvin (K).
• Celsius degrees and Kelvin are equivalent: 10C° = 10K.
• If $\mathrm{\Delta }T$ appears in a formula, you may use either Celsius degrees or Kelvin in that formula.