Thermal Energy Chapter 4 Lesson 3. Vocabulary: Thermal Energy Heat Conduction Convection Radiation Insulation.

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Presentation transcript:

Thermal Energy Chapter 4 Lesson 3

Vocabulary: Thermal Energy Heat Conduction Convection Radiation Insulation

Thermal Energy The kinetic energy of the moving particles of an object. *the more thermal energy an object has, the warmer it is. Particles

Heat The transfer of thermal energy from warmer objects to cooler ones.

Conduction The transfer of thermal energy that results from the collision of particles. Heat travels from one object to another when those objects touch. When your warm hand touches the ice cube, some of the heat goes from your hand to the ice and begins to melt it.

Convection The transfer of thermal energy through the movement of a liquid or a gas. Heat is carried to the ice cube by another moving substance. For instance, you can blow warm air from your lungs onto the ice cube. Two common substances heat travels in are moving air (wind) and water.

Radiation The transfer of thermal energy as waves. Heat can travel in heat waves. If you put the ice cube down and just hold your hand close to it, heat waves from your hand will slowly melt the ice. The earth gets warm when it absorbs heat waves from the sun.

Insulation A substance that conducts thermal energy poorly. *Images provided by Google and AltaVista

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