Question

Define :-
• heat
• thermodynamics
•conduction
• convection
•radiation
In short way

Answer 1

Answer:

• Heat is the form of energy that is transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system). Also referred to as heat energy or thermal energy. Heat is typically measured in Btu, calories or joules

• Thermodynamics is the study of the relations between heat, work, temperature, and energy. The laws of thermodynamics describe how the energy in a system changes and whether the system can perform useful work on its surroundings.

• The definition of conduction is the movement of something such as heat or electricity through a medium or passage. An example of conduction is using a metal rod to roast marshmallows on an open fire and feeling the heat rise through the rod from the fire to your hand.

• Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity.

• Radiation is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.

Answer 2

• Heat :- It is a form of energy which gives sensation of warmth.

• Thermodynamics :- The branch of physics which deals with the study of heat and its movement.

• Conduction :- A mode of heat transfer which takes place in solids due to strong vibrations of atoms and molecules.

• Convection :- Mode of heat transfer which takes place in liquids and gases which involves movement of molecules and thus transferring the heat.

• Radiation :- The mode of heat transfer which takes place in vacuum and does not require any medium like solid, liquid or gas.

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