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.
Definition of fundus. plural. fundi. play \ËfÉn-ËdÄ«, -ËdÄ\. : the bottom of or part opposite the aperture of the internal surface of a hollow organ: such asa : the greater curvature of the stomachb : the lower back part of the bladderc : the large upper end of the uterusd : the part of the eye opposite the pupil.