Answer :
The three types of heat transfer are conduction convection and radiation. Explanation:
- Heat transfer happens only when there is said to be a temperature difference. (i.e) heat transfer occurs with a higher temperature region to a lower temperature region.
- Heat is transferred usually via some medium in the case of convection and conduction whereas in the radiation no medium is required ( i.e it take place in a vacuum ).
- Conduction is a type of heat transfer that is mainly a character for the conducting and semiconducting solid material.
- Convection is the heat transfer method that usually takes place in the liquids and gases.
- Radiation is the heat transfer process in which heat is transferred via infrared or electromagnetic waves.
Heat transfers through conduction (direct contact), convection (movement of fluids), and radiation (electromagnetic waves).
Difference Between Conduction, Convection, and Radiation
There are three main methods that heat can be transferred: conduction, convection, and radiation. Let's explore each method:
- 1. Conduction
Heat is transferred between molecules directly by conduction. In this process, heat is transferred from the hotter object to the cooler one through molecular collisions. For example, when you touch a metal spoon that has been sitting in a hot pot, the heat is conducted from the spoon to your hand.
- 2. Convection
Convection involves the movement of heat by the bulk movement of a fluid (liquid or gas). Heat is transferred from one location to another by this movement. A common example is boiling water; as water heats at the bottom of the pot, it rises, and cooler water moves down to replace it, creating a circulation pattern.
- 3. Radiation
The transfer of heat via electromagnetic waves in the absence of particles is known as radiation.This method can occur through a vacuum. The warmth you feel from the Sun on a sunny day is due to radiative heat transfer.
Each method transfers heat solely because of a temperature difference.
