Notes and Study material for Exams
Earth and its Geological time scale:- Origin of the Earth:- EARLY THEORIES:- A large number of hypotheses were put forth by different philosophers and scientists regarding the origin of the earth. One of the earlier and popular arguments was by German philosopher Immanuel Kant. Mathematician Laplace revised it in 1796. It is known as … Read more
Physical Features Of India Millions of years ago, the Peninsular Plateau region (the oldest landmass) was a part of the Gondwana Land which covered India, Australia, South Africa, and South America. Over hundreds of years of shifting landmass and ocean currents broke this landmass into multiple pieces. .One such piece- the Indo-Australian plate started shifting … Read more
Distribution of rainfall in India India has a monsoon type of Climate. Rainfall occurs only for about three to four months and is uneven, unreliable and erratic in nature. Rainy season in India extends from June to mid- September. Sometimes at the time of arrival, the rainfall pours heavily which is commonly known as the … Read more
Forest- Types and Conservation of Forest and Forest Resources A forest is a complex ecosystem which is predominantly composed of trees, shrubs and is usually a closed canopy. Forests are storehouses of a large variety of life forms such as Plants, mammals, birds, insects and reptiles etc. Also the forests have abundant Microorganisms and Fungi, … Read more
Rocks are aggregates or physical mixture of one or more Minerals. Minerals on the other hand are made up of two or more Elements in a definite ratio. They have a definite chemical composition. Crust is made up of more than 2000 minerals, but out of these, 6 are the most abundant and contribute the … Read more
Rajasthan- Relief and Structure The main geographic feature of Rajasthan is the Aravalli Range, which runs across the state from southwest Guru Peak (Mount Abu), which is 1,722 m in height to Khetri in the northeast, for more than 850 km. This divides Rajasthan into 60% in the North West of the lines and … Read more
Rajasthan – Drainage System Rajasthanis biggest state in area with 5.5 percent Population but only 1 percent water Resources of the country. State is divided in to 13 watersheds and 59 sub-watersheds. Most of the Rivers originate from the Aravali hills and flow either in east or west. Those Rivers flowing in east merge with Yamuna. … Read more
SALT WATER LAKES Sambhar Lake Located in jaipur, nagore and ajmer this is the largest saline water lake in entire India and a major source of salt production in India(8%). The lake stretches in length for 22.5 km and its width varies from 3 to 11 km. The lake is fed by several freshwater streams. … Read more
Rajasthan is blessed with great variety of natural Resources ranging from scanty vegetation in the western arid region to mixed delicious and sub-tropical evergreen forests in the east and south east of Aravali ranges. Forest cover is 32744.49 sq.km.(12475 sq.km. is reserved, 18222 sq.km.is Protected Forest 2046.75 is unclassified forest) which is about 9.57% of the total … Read more
Climate of Rajasthan Like its varying topography, Rajasthan has varying climate. The weather or climate of the Rajasthan can be broadly classified into four distinct seasons. They are – Pre-monsoon, which is the hot season preceding the monsoon and extends from April to June, the Monsoon that occurs in the month of June in … Read more