Conduction, Convection and Radiation

Question 1

Conduction

Answer 1

Thermal conduction is the transfer of heat through matter where the particles stay in place. Heat is transferred by high kinetic energy, faster-moving particles, to lower kinetic energy, slower-moving particlews when they collide.

Question 2

Convection

Answer 2

In convection, heat energy is carried by particles as they move towards cooler/lower density area. Convection only occurs in liquids and gases.

eg. heating a room, water in a pot

Question 3

Radiation

Answer 3

Radiation does not require a medium to travel through. In radiation, electromagnetic waves or ‘heat waves’ travel from one object to another.

eg. sun, heating your hands next to a fire