How electrical energy can be used by an electrical toothbrush that is plugged in but not running?

How does convection affect our atmosphere? our layers of earth? our oceans?

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.

Based on the image below what would an observer on the nighttime side of earth observe?