Question

In convection current heat transferred upward
A) horizontally
B) diagonally
C) vertically
D) None of these

Answer 1

Convection is a mode of heat transmission in fluid in which transfer of heat takes place by the bodily movement of the particle due to differences in their densities at two place and is a consequence of gravity because on account of gravity the hot light particles rise up and cold heavy particles try settling down

Complete step by step answer:
As we know, Convection is the physical phenomenon that involves heat exchange through two systems at different temperatures, where at least one of them is fluid, and develops on the fluid medium in proximity to the separating surfaces.
So, we know the equator is the part on Earth that is nearest to the sun and therefore receives much greater heat. Due to this the air which is near the equator rises upwards as it becomes less dense and later out it spreads out and again descends towards the equator. This process is responsible for the continual circulation of air. That is why convection current heat transferred upward vertically.

Therefore, the correct option is (C)

Additional information:
Conduction: In this mode of heat transmission heat is transferred from one point to another without bodily movement of the particles i.e. transfer of energy(heat) takes place. This type of transmission takes place generally in solid. Like in iron rod.
Radiation: this is the fastest way of heat transmission, in this transmission of energy in the form of waves or particles through space or through a material medium.
Like the transfer of heat from the sun.

Note:
A convection current is a natural process of heat transfer involving the movement of energy and heat from one place to another. It is of different types- Convention in Air, Convention in Our Houses, Convention in Earth, etc.