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Thermal Energy

Thermal Energy. Thermal Energy. Matter is made of particles that are in constant random motion The faster the particles move, the warmer an object gets. Kinetic Theory. This is the basis of Kinetic Theory. Temperature. Temperature is the measure of average kinetic energy of an object

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Thermal Energy

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  1. Thermal Energy

  2. Thermal Energy • Matter is made of particles that are in constant random motion • The faster the particles move, the warmer an object gets

  3. Kinetic Theory • This is the basis of Kinetic Theory

  4. Temperature • Temperature is the measure of average kinetic energy of an object • Temperature and energy are directly related • The more kinetic energy, the higher the temperature • The more potential energy, the lower the temperature

  5. Temperature • The standard unit for temperature is Kelvins (K) • We also use Celcius and Farenheit • Kelvin -273 = ˚C

  6. Why does the ice melt?

  7. Thermal Energy • The total of the Kinetic Energy and Potential Energy of all particles in an object. • Thermal energy and temperature are directly related • Thermal energy and mass are directly related

  8. Thermal Energy and Mass

  9. Heat • Thermal energy that flows from something at a higher temperture to something at a lower temperature is called heat • Heat is measured in Joules (J) • An example is when you get up from a chair and it is warm to the touch. • In science, ther is no cold, only absence of heat

  10. Specific Heat • Specific heat is the amount of heat needed to raise 1 kg of a substance 1 ˚C • It is measured in J/kg ˚C

  11. Specific Heat • Water has a very high specific heat. • It is good as a coolant in radiators

  12. Formula for Change in Thermal Energy • The formula for thc change in thermal energy is Q = mCΔT • Q – the change in thermal energy • M – mass of the object • C – specific heat of the substance • ΔT – change in temperature (T final – T initial)

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