But convection currents are ultimately at the mercy of temperature differences because these are what create pressure differences in the first place. The pressure difference between two locations is called a pressure gradient, and the force that actually moves air as wind is called the pressure gradient force.
oÂ·nus. n. 1. A difficult or disagreeable responsibility or necessity; a burden or obligation. 2. Responsibility for an error or fault; blame: Each side wants to avoid the onus of having started the disagreement. 3.
Top Definition. Potamus. Potamus-That girl that you took one for the team for, back in high school before you took off your training wheels; you know a lil old ânail the whaleâ. They are also notoriously known as savage individuals whose only concern is to consume large amounts of semen into any orifice on their body.otamus-That girl that you took one for the team for, back in high school before you took off your training wheels; you know a lil old ânail the whaleâ.