Meaning of the word "convection current" in English

What does "convection current" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

convection current

US /kənˈvɛkʃən ˈkɜːrənt/
UK /kənˈvɛkʃən ˈkʌrənt/

Noun

a current in a fluid (liquid or gas) that results from convection, the process of heat transfer by the bulk movement of molecules within fluids

Example:
The Earth's mantle is driven by slow-moving convection currents.
Boiling water demonstrates convection currents as hot water rises and cooler water sinks.