Page-4 of GS-I: Salient Features of World Physical Geography
Discuss the factors that induce Urban Heat Island (UHI) effect. What strategies can be adopted to reduce the UHI effect? Explain.
Urban Heat Island (UHI) refers to the phenomenon which causes an increase in air and surface temperature of the urban areas in comparison to their rural counterparts. Factors that induce Urban Heat Island (UHI) effect are: Natural vegetation replaced by impervious ..
Topics: GS-I: Salient Features of World Physical Geography
Draw a map indicating location of tropical rainforests in the world. Discuss their importance to mankind.
Rainforests cover only 6% of the total Earth’s land surface. The major portion of rainforests is located in the Amazon River Basin in South America. These are also found in western Africa and parts of Southeast Asia and Madagascar Island. In ..
Topics: GS-I: Salient Features of World Physical Geography
Explain the terms: (1) Aurora Borealis and Aurora Australis (2) Dry adiabatic lapse rate and moist adiabatic lapse rate.
Aurora Borealis and Aurora Australis Aurora is referred to as polar lights observed around the magnetic poles in the northern as well as in southern hemispheres. It results due to collisions between electrically charged particles from the sun and the earth’s ..
Topics: GS-I: Salient Features of World Physical Geography
With suitable examples, discuss the various landforms associated with volcanic activities.
Volcano refers to a place from where gases, ashes and lave escapes out. Volcanic landforms are created by cooling of magma or lava. Intrusive Landforms When Magma cools inside the crust. The different types of intrusive landforms are: Batholith: Large ..
Topics: GS-I: Salient Features of World Physical Geography
What is the effect of geographic isolation on speciation? Discuss with suitable examples?
Geographic isolation refers to population of organisms, plant and animals which are separated from members of same species thus cannot exchange genetic material. This separation may occur due to variety of reasons like barriers, natural events like earthquakes. Effect of ..
Topics: GS-I: Salient Features of World Physical Geography
The Himalayan Foothills abound in natural as well as artificial wetlands." Discuss with suitable examples.
Wetlands are defined as land which is saturated with water seasonally or permanently with water and takes on the characteristics of a distinct ecosystem. India has 26 Ramsar wetland sites and a number of small and large wetlands. Himalayan Foothills ..