energy changes in a system

• what does it mean if an object has a low specfic heat capacity?

  heats up and cools down quickly, takes less energy to change its temperature
• what does it mean for an object to have a high specfific heat capacity

  • heats up and cools down slowly
  • takes more energy to change its temperature
• what are good electrical conductors?

  • have low specific heat capacity
• what are poor thermal conductors?

  • high specific heat capacity so it stays hto for a long time
• how can energy be transferred?

  • Heating by particles
  • heating by radiation
  • mechanical work done by forces
  • electrical work done by current
• how is energy transferred by heating?

  • increases the energy in the kinetic store of particles
  • this increases the energy in the thermal store
  • this either causes a raise in temp or changes the state
• how is energy transferred by forces?

  • energy is transferred mechanically from the kinetic store of the acting force to the store of the object being acted on