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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