HEAT AMD TEMPERATURE

HEAT: is energy in transit it is transmited between bodies wich are at different temperatures and wich come into contact with each other.

TEMPERATURE: is a physical magnitude related to the amount of heat that a boby can receive and absorb. it is a type of energy wich is not, it only appears the transfer of energy.

HEAT TRANSMISSION IN BODIES

CONDUCTION: is the transmission of heat through an solid object example: a piece of metal in the fire.

CONVECTION: transfer heat through an interchange of cold and hot molecules example heating water in a tea pot.

RADIATION: is the transfer of heat by electromagnetic radiation, gerenally with infrared exampleis the way a room is warmed.

HOMEWORK

investigate 

thermometer scals 

perceptionof heat the skin, the sense of touch 

burns

hot bodies 

cold bodies

solution

low heat 0 34' c

normal 36'c 37'c

high heat 38'c

thermometer : instrument used to measure the temperature. the most used thermometer is the made up of mercury formed by a capillaryof glass of a uniformdiameter comunicater by an end with a blader full with mercury.

TYPES OF THERMOMETER 

* made of glass and using mercury

* made of glassand using niquel, oxid, coblat and magnesium 

* for high temperatures made of metal using electronic circuits.