Сonvection currents will be stopped because there is no heat to keep them moving.
Explanation:
Hello! Let show you two types of convection: natural and forced. So the heating of the fluid, as well as the air in the room are examples of natural convection. The forced convection is observed, if to stir a fluid a agitator, a spoon, a pump, etc. In order to be convection in liquids and gases, it is necessary to heat them. Therefore, convection currents will be stopped because there is no heat to keep them moving.
An imperative sentence is one in which you order somebody to do something. So, this sentence could be rewritten as an imperative sentence like this: Go to the La Brea tar pits!
