write a short note on 1.conduction
Answers
Explanation:
Conduction is the transfer of energy in the form of heat or electricity from one atom to another within an object by direct contact. ... Conduction of heat occurs when molecules increase in temperature; they vibrate, and this vibration and movement passes the heat energy to the surrounding molecules
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Conduction is defined as
The process in which heat flows from objects with higher temperature to objects with lower temperature.
An area of higher kinetic energy transfers thermal energy towards the lower kinetic energy area. High-speed particles clash with particles moving at a slow speed, as a result, slow speed particles increase their kinetic energy. This is a typical form of heat transfer and takes place through physical contact. Conduction is also known as thermal conduction or heat conduction.
Conduction Equation
The coefficient of thermal conductivity shows that a metal body conducts heat better when it comes to conduction. The rate of conduction can be calculated by the following equation:
Q = [K.A.(Thot−Tcold)]d
Where,
Q is the transfer of heat per unit time
K is the thermal conductivity of the body
A is the area of heat transfer
Thot is the temperature of the hot region
Tcold is the temperature of the cold region
d is the thickness of the body
Conduction Examples
Following are the examples of conduction:
- Ironing of clothes is an example of conduction where the heat is conducted from the iron to the clothes.
- Heat is transferred from hands to ice cube resulting in the melting of an ice cube when held in hands.
- Heat conduction through the sand at the beaches. This can be experienced during summers. Sand is a good conductor of heat.
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