The pressure of a distillation column is depending on the vapor pressure of the bottom liquid which is temperature dependence. The pressure at the top is the difference between bottom pressure and trays/piping pressure drop. 2.
Areas that were particularly affected included Port Hedland, the shires of Roebourne and Ashburton, and several mine sites. Cyclone George caused extensive damage to communities in the far north of Western Australia with three fatalities and 20 people injured.
Best Answer: Convection is caused by differences in air density (due to differences in temperature). Warm, lightweight air rises, while cold, dense air falls. So gravity causes convection when there is a difference in air density (temperature). What Causes Convection. No - mantle convection causes plate movement. Sometimes the plate movement it causes can affect the convection, such as when there is a subduction zone and a large amount of cold light crust is pushed down into the mantle.