Movement of Heat Movement of Heat

Metals are very good conductors. Conduction Conduction is the movement of heat through a substance (normally solids) without the substance actually moving. Metals are very good conductors. Non-metals are usually poor conductors (insulators). Gases are very poor conductors Conduction

Conduction in non-metals

Conduction in metals Conduction in metals

Conduction Conduction

Convection is the movement of heat through fluids (liquids and gases). As particles are heated they move faster, making this part of the substance less dense and causing it to rise. This sets up a convection current. Convection

Convection in Liquids Convection in Liquids

Convection in Gases Convection in Gases

Convection Convection

The hotter the object the more infra red radiation is emitted. Radiation is the movement of heat in gases and through space; it does not require particles to travel. This heat radiation is infra-red radiation. The hotter the object the more infra red radiation is emitted. Dark, matt surfaces emit and absorb more radiation than light, shiny surfaces at the same temperature. Radiation

Radiation Radiation

Radiation Radiation

Emitting Radiation Emitting Radiation

Absorption of Radiation

Absorbing & Emitting Radiation

Thermos Flask Thermos Flask

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