Thermal Energy• 3rd grade science

The measure of the energy of particles in motion in matter. When the particles in the air move more slowly, they have less thermal energy.

• Thermometer• Fahrenheit (32 degrees; 212

degrees)• Celsius (0 degrees; 100 degrees)

Temperature • The boiling point is

the temperature at which a substance changes from a liquid to a gas.

• The freezing point is the temperature at which a substance changes from a liquid to a solid.

• Measurment related to the quantity of molecules.

Heat • Thermal energy always moves from warmer to

cooler objects.

• Heat is the result of molecules vibrating quickly. Heat is moving energy.

• The transfer of heat by direct contact between objects or particles.

• Heat transferred through space.

• EXAMPLE: The sun’s rays causing a sunburn.

• Heat transferred by the movement of molecules within a substance.

• Movement occurs from warmer areas to cooler areas.

• The movement of a substance that is caused by differences in temperature and density.

• EXAMPLES: wind boiling water

• NATURE WANTS

EVERYTHING TO BALANCE ! !

Insulators and conductors allow us to somewhat control the flow of

heat or the change in temperature of objects.

• Conductors are materials that transfer heat easily.

• Examples: metals like copper and gold

• The molecules in a conductor are close together. This allows the heat to move to all parts of the pot and the stew in the pot.

• An insulator is a material that does not transfer heat easily.

• Examples: • liquids and gases• A jacket• A cooler