Chapter 6 Thermal Energy

1
Chapter 6 Thermal Energy

• Sections 1 and 2

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Temperature

• The measure of the particle movement or kinetic
  energy of atoms and molecules in an object.

3
Absolute zero

• The lowest temperature possible (-273 C) when no
  more energy can be removed from matter, or when
  particles are no longer moving.

4
Thermal Energy

• The total energy of all particles in matter.

5
Heat

• Movement of thermal energy from a high
  temperature to a low temperature.

6
Heat Transfer

• Conduction Heat is transferred from one objects
  particles to another

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Heat Transfer cont

• Convection The mass movement of heated liquid or
  gas.
• EX. Wind, oven, home heating system.

8
Radiation

• Transfer of energy through electromagnetic waves.
• EX The sun

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Conductors and Insulators

• A material that absorbs or conducts heat well is
  a conductor.
• EX Metals

10
Conductors and Insulators

• Insulators are materials that do not conduct heat
  well and slow the transfer of energy.
• EX Wood, wool, straw, Styrofoam

11
Specific Heat

• The amount of energy required to raise the
  temperature of 1Kg of a substance by one Kelvin.
• EX water has a specific heat of 4.18J/KgxKelvin
• Units J/KgxKelvin

12
Equation for change in Energy or transfer of
thermal energy

• Mass x specific heat x change in temperature

Heat added specific heat x mass x (tfinal -
tinitial)