Course Code: FEG-02
Assignment Code: FEG-2/TM A/2012-13
Max. Marks: 100
All Questions are cornpulsory
1. Read the following passage and make notes in the appropriate formal. ( 1s) 'fhe peryretual cycle of change which has created the face of the Earth, with all its rugged and lascinating variety, usually happens too slowly to be noticed. But occasionally it is rapid and '','iolent. Volcanoes clisgorge molten lava, earthquakes rip open the landscape, landslid", .uriy u.,"uy whole mountainsides. Then human beings become aware of the awesome forces that are shaping their planet.
These forces are fuelled by three powerful sources of energy - heat fronr within the Ealth, heat lrom the Sun, and the force of gravity. Every landform in the world has been shaped by these ttu.ee energy sources.
'fhe continents that drift across the surface of the globe, setting off volcanoes and carthquakes and building mountains. are driven by heat from the Earth's interior which has a temperature of about 5000"C (9000'F). Most of this heat is created by the breakdoun of radioactive elements. Earth is unique amotlg the planets of the Solar System in having liquid water on the surface. Anci water has a major role in shaping the planet. The warmth of the Sun evaporates u'ater frorn seas and iakes. The vapour rises and condenses to form clouds and then falls again as rain and snow. It is then that its landscaping powers begin, weathering rocks and washing arn'ay the loose material. or glinding down the landscape under the power of a glacier. The Sun's heat also produces the rn'ind and the waves that scour the land.
The third force - gravity - causes the tides, rvhich nibble away at the edges o1'continents, and landsiides. which alter the shape of mountains. Under the influence of gravity. rain worlis irs *.ay downlvards as streams and rivers, carving the terrain. On its journey, it carries fragments oi rock and sand to be deposited...