Question

select the correct answer. which description is most comparable to the convection currents that exist in earths mantle? a. hot air rising and cold air sinking b. cold water rising and hot water sinking c. the sun rising and then setting 14 hours later d. random distribution of temperatures e. hot air sinking and cold air rising

Explanation:

Convection currents involve the movement of a fluid (in Earth's mantle, semi - molten rock acts as a fluid). Hot material rises and cold material sinks. In the atmosphere, hot air rises and cold air sinks, similar to mantle convection. Cold water is denser and sinks while hot water rises, so option B is incorrect. The Sun rising and setting is due to Earth's rotation, not convection (option C is incorrect). Random temperature distribution is not convection (option D is incorrect). Hot air is less dense and rises, not sinks (option E is incorrect).

Answer:

A. hot air rising and cold air sinking