Heat is transferred through three main modes:
1. Conduction:
Occurs in solids.
Heat transfers from molecule to molecule through direct contact.
Example: Heating one end of a metal rod.
2. Convection:
Occurs in liquids and gases.
Heat is transferred by the movement of fluid particles.
Example: Boiling water (hot water rises, cool water sinks).
3. Radiation:
Transfer of heat through electromagnetic waves.
Does not require a medium (can occur in a vacuum).
Example: Heat from the Sun reaching Earth.
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