Droplets falling to the ground produce a downdraft as they drag cold air behind them; this cold air then spreads out over the Earth’s surface. Because of this, thunderstorms frequently produce powerful winds. Stages of Thunderstorms There are 3 stages in the formation of a thunderstorm. The ...
Droughts: Notes for UPSC GeograpahyDrought is a phenomenon that comes under geography in the strict sense of the word but has reverberations across various fields. This is because droughts affect the livelihood and economies and even lives of people affected by it. Hence, it assumes importance ...
Man-made causes are usually the ones that become dangerous. Fire is caused when a source of fire like naked flame, cigarette, electric spark, or any source of ignition comes into contact with inflammable material. Other human-led causes are land clearing and other agricultural activities, mainten...
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These are formed as a result of persistent contrails (Cirrus homogenitus) that may be observed, over some time and under the influence of strong upper winds, to grow and spread out over a larger portion of the sky, and undergo internal transformation such that the cloud eventually takes on...
when convection takes place due to buoyant force as there is a difference in densities caused by the difference in temperatures it is known as natural convection. examples of natural convection are oceanic winds. forced convection: when external sources such as fans and pumps are used for ...