June 2011 plate tectonics and associated hazards Comment on the extent to which the features shown in the image support the theory of plate tectonics. To begin with we can see that many of the landmasses appear as separated jigsaw pieces with their complementary shaped coastlines. One example of this is how the North Western coastline of Africa could quite easily ‘slot into’ the North Eastern Coastline of America. This suggests that in the history of the Earth‚ these two land masses were once connected
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The Himalayas – Young Fold Mountains The Himalayas are known to be young fold mountains. Young‚ because these have been formed relatively recently in the earth’s history‚ compared to older mountain ranges like the Aravallis in India‚ and the Appalachian in the USA. They are known as fold mountains because the mountains extend for 2500 km in length in a series of parallel ridges or folds. The accepted theory about the formation of the Himalayas started to take shape in the year 1912 when German
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Landforms of Europe Europe‚ the planet’s 6th largest continent‚ includes 47 countries and assorted dependencies‚ islands and territories. Europe’s recognized surface area covers about 9‚938‚000 sq km (3‚837‚083 sq mi) or 2% of the Earth’s surface‚ and about 6.8% of its land area. In exacting geographic definitions‚ Europe is really not a continent‚ but part of the peninsula of Euroasia which includes all of Europe and Asia. However‚ it’s still widely referred to as an individual continent
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does the thickness of ocean floor sediments increase the farther they are from a ridge?! -Thickness of ocean floor sediments increase the farther they are from a ridge because when new rocks form at the ridge‚ old rocks move away from the centre and this rocks stack along the end of sediments which pile up for long time that creates thick sediments‚! ! 10. How does sea floor spreading explain the movement of tectonic plates?! - Sea floor spreading in movement of tectonic plates is called divergent
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events are major pieces of evidence towards proving that plate tectonics theory is valid (40 marks) The theory of plate tectonics states that the Earth’s lithosphere (top layer of the Earth’s crust) is split up into rigid sections called plates that are moving relative to one another as they move on top of the underlying semi-molten mantle. These plates are either continental‚ The North American Plate‚ or oceanic‚ The Nazca Plate. Tectonic plates are powered by convection currents‚ which is the circular
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1.0 Introduction The Himalayas are the longest and most well known mountain range in the world. It is located just north the Indian sub-continent. It is also home to some of the highest points in the world above sea level‚ Mt. Everest‚ standing at 8‚848 metres above sea level and K2 standing at 8‚611 metres.The main Himalayan range runs from the Indus river valley in the west‚ to the Brahmaputra river valley in the east‚ forming a range with a length of 2‚400 km long‚ which varies in width from
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The Indian Himalaya belt is prone to various types of natural disaster due to its inherent nature and climatic conditions. Earthquakes ranging in severity‚ floods or flash flood‚ and glacial lake outbursts are common among other hazards. Monsoon is the time (almost every year) when few water-induced disasters take place in some form or another in various places across this mountain. Cloudbursts‚ that is sudden and violent rainfall‚ followed by flash floods are generally reported in the monsoon period
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Tectonics Division of Pakistan Defination: Tectonics zones of Pakistan are the Eurasian Plate‚ Arabian Plate and Indian Plate which is part of Indo-Australian Plate. Eurasian Plate: The Eurasian Plate is a tectonic plate which includes most of the continent of Eurasia (a landmass consisting of the traditional continents of Europe and Asia)‚ with the notable exceptions of the Indian subcontinent‚ the Arabian subcontinent‚ and the area east of the Chersky Range in East Siberia. It also
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The theory of plate tectonics states that the Earth’s lithosphere is broken up into many different pieces separated by jagged cracks. These are called the tectonic plates. They are in slow‚ constant motion pushed by the convection currents in Earth’s asthenosphere. This theory explains the process of sea floor spreading at mid-ocean ridges‚ and subduction at deep ocean trenches. It was proposed by J. Tuzo Wilson in 1965. He combined the discoveries of Harry Hess and Alfred Wegner to support this
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Lecture How do we explain behavior Behaviour generally refers to actions or reactions (an activity or response of some kind) of an object or organism usually in relation to the environment or surrounding world of stimuli. Behaviour can be conscious or unconscious‚ overt or covert‚ voluntary or involuntary‚ sometimes it can be common‚ unusual‚ acceptable‚ or outside acceptable limits. The acceptability of behavior is evaluated relative to social norms and regulated by various means of social control
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