Artificial clouds made by the exhaust of jet aircraft. Heat mixes and moves air. When a layer of air receives enough heat from the earth's surface, it expands and moves upward. Colder, heavier air flows under it which is then warmed, expands, and rises. The warm rising air cools as it reaches higher, cooler regions of the atmosphere and begins to sink.
Convection causes local breezes, winds, and thunderstorms.
Local time at zero degrees longitude at the Greenwich Observatory, England. Coriolis force The apparent tendency of a freely moving particle to swing to one side when its motion is referred to a set of axes that is itself rotating in space, such as Earth. The acceleration is perpendicular to the direction of the speed of the article relative to the Earth's surface and is directed to the right in the northern hemisphere. Two or more processes that affect one another. CPU See central processing unit.