THERMAL ENERGY

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Thermal energy, temperature heat

• Different objects at the same temperature can
  have different energies.
• You may be used to thinking about thermal energy
  as heat, but they are not the same thing.
• Temperature, thermal energy, and heat are closely
  related, but they are all different.

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THERMAL ENERGY

• The total energy of all of the particles in an
  object is called thermal energy.
• The thermal energy of an object depends on the
  number of particles in the object, the
  temperature of the object and the arrangement of
  the particles.

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HEAT

• Thermal energy that is transferred from matter at
  a higher temperature to matter at a lower
  temperature is called heat.
• Or
• Heat is thermal energy moving from a warmer
  object to a cooler object.

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SPECIFIC HEAT

• The specific heat is the amount of heat per unit
  mass required to raise the temperature by one
  degree Celsius.
• Example Notice when you walk on the waters edge
  in the sand, why is it that the sand is much
  hotter than the water?
• Temperature does not rise at the same rate for
  all objects.
• Specific heat is measured in joules per
  kilogram-kelvin (j/kgk).

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3 FORMS OF HEAT TRANSFER

• CONDUCTION- the transfer of energy through matter
  from particle to particle. For example, a spoon
  in a cup of hot soup becomes warmer because the
  heat from the soup is conducted along the spoon.
  Conduction is most effective in solids-but it can
  happen in fluids.

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• CONVECTION- the transfer of heat by the actual
  movement of the warmed matter. as the Heat leaves
  the pot on a stove currents of steam and air
  rise. Convection is the transfer of heat energy
  in a gas or liquid by movement of currents.

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• RADIATION- Electromagnetic waves that directly
  transport ENERGY through space. Sunlight is a
  form of radiation that is radiated through space
  to our planet without the aid of fluids or
  solids.

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HEAT TRANSFER
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CONDUCTORS INSULATORS

• A conductor transfers thermal energy well. An
  insulator does not transfer thermal energy well.
• Conductors- metals such as silver and stainless
  steel, or tile floor
• Insulators- wood,wool,straw and paper are good
  insulators. Blankets and clothes are good
  insulators because they slow the transfer of heat
  out of your body.