What situation primarily involves heat transfer by convection?

Explanation:

In the process of convection, first the molecules of substance gets heat and becomes heated. As the molecules heated, their density decreases and hence they rises up. And the molecules which are cooler, they fall and comes in contact of higher temperature and then they rises up. the process repeats itself until the entire liquid heated uniformly.

Heating of a fluid bulk from the bottom.

Explanation:

Whenever a fluid bulk is heated form the lower layers then due to the variation of the density of the fluid at different temperature we observe the movement of molecules leading to convection.

divide the right side by the left side

0.024÷1.2=0.02 for example

gravititional force is a force that is acting around you, it is non-contactable and it is a force that pulls you to the core of the earth.

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