Tnpsc and Upsc Notes Pdf
Solar Insolation Solar Insulation is the amount of solar radiation incident upon a unit horizontal surface over a specified time for a given place. It mostly depends on the solar zenith angle and also on the ratio (d/dm) of the actual distance to the mean distance of the Earth from the Sun. The surface of … Read more
Structure of atmosphere The atmosphere consists of different layers with different temperatures and densities. The density of the atmosphere is highest at the surface of the earth and as the altitude increases the density of the atmosphere decreases. The column of the atmosphere has five different layers depending upon the condition of the temperature and … Read more
The Composition of Atmosphere are Gases, Water, Vapour and Dust Particles and the below table shows details of different gases in the air particularly in the lower atmosphere. Next, we’ll look into its chemical composition. Chemical composition of atmosphere In the atmosphere of the earth, the air is a mixture of gases that contains 78% … Read more
Distribution of alluvial soil in India Alluvial soil is distributed widely in the Northern Plains of India, also in eastern coastal plains in India such as the Mahanadi delta, Godavari delta, Krishna delta and Kaveri delta. In Northern Plains, it is found throughout the Indo-Gangetic plain and especially along with the lower courses of India’s … Read more
Depositional landforms of groundwater A variety of depositional forms are developed within the limestone caves. The main chemical component in limestone is Calcium Carbonate. The groundwater may become saturated with Calcium bicarbonate. The Calcium bicarbonate is formed by a reaction between Carbonic acid which is present in the rainwater and the calcium carbonate present in … Read more
This article focuses on the work of the Erosional landforms of groundwater. If the rocks are permeable, thinly bedded, high jointed and cracked, then the water percolates well into it. After the water goes down to some depth vertically, the water under the ground flows horizontally within the bedding places, joints or within the materials … Read more
Depositional landforms of river The depositional landforms that formed the running waters of the river are: Alluvial Fans, Deltas, Floodplains, Natural Levees, and Point Bars, Meanders, Braided Channels The main work of the river is deposition, bed building, by which it forms the flood plains. When there is a large water flow such as floods, … Read more
The erosional landforms of the river are River Valley Formation, Potholes and Plunge Pools, Incised or Entrenched Meanders, River Terraces, etc. Valleys The valley begins as small and narrow rills. The rills then slowly develop into long and wide gullies. Then the gullies get deepened, widened, and rise on becoming valleys. Based on the dimensions … Read more
Plain formed by Wind Deposition The two features that are formed by wind deposition are Sand dunes and loess deposits. The dunes are also called Aeolian Landforms. The wind is a good sorting agent. Based on the velocity of the wind, varying sizes of grains are moved along the floor by saltation, or by rolling, … Read more
The wind is one of the two dominant agents in hot deserts. The desert floors get heated up too much and too quickly because of are dry and barren. The heated floors heat up the air directly above them and result in upward movements in the hot lighter air with turbulence, and any obstructions in … Read more