Answer :
Final answer:
The two most important processes in heating the interiors of terrestrial planets are conduction, where heat is directly transmitted through material, and convection, which involves the movement of fluid due to temperature differences, leading to heat transfer.Hence option B is correct.
Explanation:
The two most important processes in heating interiors of terrestrial planets are conduction and convection. These processes facilitate the transfer of heat within the planet's interior. Conduction is the process where heat is transmitted through a substance when there is a temperature gradient.
This occurs directly in the material itself, as particles transfer energy between each other. An everyday example is the heat you feel from a chair after standing up, which was transferred from your skin through conduction.
Convection, on the other hand, involves the transfer of heat by the actual movement of a fluid (which can be liquid or gas). This is important in planetary interiors as it drives the motion of molten rock and can contribute to geological phenomena like plate tectonics. Convection creates currents within the fluid due to temperature differences, such as when warm air rises and cool air sinks. Heat transfer by the circulation of a fluid like this is distinctly called convection.
