Define conduction,convection, & radiation
Answers
1. conduction is a process by which heat or electricity is directly transmitted through the material of a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
2. A transfer of heat from liquid to gas by the movement of particles by liquid or gas is called convection......
(or)
In simple language when we heat a container filled with liquid its bottom layer get heated and goes upper and upper layer comes down.
3.radiation is a emission or transmission of energy in the form of waves or particles through space or through a material medium . it is also called as radiant energy and it causes ionization.
When heat, electricity, sound, impulse etc. are transmitted from one area to another through a material medium, without movement of the material medium, it is called conduction.
Convection is normally caused in liquids as the hotter and less dense material rises to the top, causing the colder and therefore more dense material to go to the bottom.
Radiation is emission of energy from electromagnetic waves or moving energy particles.