Plate boundaries are zones where plates collide or separate resulting in the crust being created or destroyed. The plates move due to the movement of convectional currents in the mantle below the crust. This is called as the endogenetic force as the energy comes from within the earth. At a constructive plate boundary… Continue Reading →
Sample Answer: Factors that have influenced the development of primary activities (farming) in a continental/sub-continental region (India) Farming is one of the main primary activity in India. Relief, soil and climate have influenced the development of agriculture. India ranks second worldwide in terms of farm output. Rice is the major crop… Continue Reading →
Biomes are defined as large world regions in which the life cycles of plants, animals, climate and soil are all linked to one another. Example: The desert biome. The hot deserts are generally located in tropical and sub-tropical zones between 15° and 30° north and south of the equator. Most… Continue Reading →
In the deserts the sunrays reach the surface of the earth at almost right angles during summertime. The heat is therefore concentrated over small areas of ground which gives great heat. Daytime temperatures are high due to no cloud or humility to help block the sun rays The absence of vegetation and water… Continue Reading →
A volcano is a opening in the surface of the earth which allows hot, molten rock, ash, and gases to escape from below the surface through a pipe-like outlet called a vent. These eruptions form a cone-shaped landform made of these materials. Magma chamber: A large underground pool of molten rock… Continue Reading →
Igneous Rocks Igneous rocks are formed when molten rock cools and hardens. Igneous rocks have crystals. The large crystals are formend in rocks that cooled slowly (deep in the crust). The small crystals are found in rocks that have cooled quickly on the surface. Plutonic igneous rocks are formed when magma cools within the earth’s crust. eg. granite. Volcanic igneous rocks are formed when molten rock cools… Continue Reading →
