Heat Transfer

• Conduction is the process where vibrating particles transfer energy to neighbouring particles
• During conduction the particles in an object that are heated more vibrate and collide with each other causing energy to be transferred between kinetic energy stores
• Thermal conductivity is how quickly energy can be transferred through a material by conduction
• Conduction mainly occurs in solids
• Convection occurs only in liquids and gas
• Convection is where energetic particles move away from hotter to cooler regions
• When liquids and gases are heated up the particles gain kinetic energy and move faster which causes the density to decrease. This makes hot air rise and cool air sink causing a convection current.