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9.6 Specific Heat & Thermal Conductivity

Part of Thermodynamics in AP® Physics 2: Algebra-Based. Read the opening section, then create a free account for the full interactive lesson, practice, and progress tracking.

Specific Heat

Specific Heat tells us how much heat is required to raise the temperature of a certain object. Each material has a unique specific heat. A lower specific heat means a material requires less heat in order to raise its temperature whilst a higher specific heat means a material will need more heat to raise its temperature. Specific heat is a scalar, measured in Joules per kilogram kelvin (Jkg∗∘K{\frac{J}{kg*^{\circ}K}}), and represented with the variable c.

Q=mcΔTQ=mc\Delta T
  • Q{Q} is the heat needed to raise an object’s temperature
  • m{m} is the mass of the object
  • c{c} is the object’s specific heat
  • ΔT{\Delta T} is how much the object’s temperature has been raised or decreased by

This equation shows us that the more mass a material has, the more heat it will take to raise or lower its temperature and also the higher you want to raise or lower its temperature, it will require more heat.

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