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coral reefs

Coral Reefs

What is the coral reef? Coral reefs represent one of the most diverse biological systems on the planet. A multitude of species depend on these crucial marine formations for their existence. Numerous human populations worldwide… Coral Reefs

Geography

Islands

What is the definition of an island? An island refers to a piece of land entirely encircled by water. Such landforms may exist individually or as clusters, situated within open seas or oceans. Smaller variants,… Islands

Geography

Mountains

What is the definition of a mountain? Since the inception of geological history, no fewer than nine distinct orogenic or mountain-forming episodes have reshaped the Earth’s crust through extensive folding and faulting. Some of these… Mountains

Tsunami

What is a tsunami caused by?

The term tsunami, derived from Japanese, translates to “harbour wave.” It refers to a succession of extremely long-wavelength oceanic waves produced by substantial disturbances, most often linked to earthquakes occurring beneath or in proximity to… What is a tsunami caused by?

Geography

Earthquakes

An earthquake can be defined as the shaking or trembling of the Earth’s surface, primarily triggered by the sudden release of energy that generates vibrational waves propagating in every direction. This energy discharge takes place… Earthquakes

Plate Tectonic Processes

The Theory of Plate Tectonics

Plate Tectonics Major Tectonic Plates • Antarctic and the adjacent oceanic plate• North American plate• South American plate• Pacific plate• India-Australia-New Zealand plate• African plate with the eastern Atlantic floor• Eurasian plate and the neighboring… The Theory of Plate Tectonics

Sea Floor Sprending

Sea Floor Spreading

• This phenomenon constitutes a fundamental aspect of plate tectonic theory. Its identification supplied a crucial mechanism for continental drift, a process that Alfred Wegener was unable to elucidate.• In 1912, when Alfred Wegener postulated… Sea Floor Spreading

coral reefs

प्रवाल भित्ति (Coral Reefs)

प्रवाल कीटों द्वारा निर्मित अस्थि-पंजर से उत्पन्न समुद्री संरचनाओं को ‘प्रवाल भित्ति’ की संज्ञा दी जाती है। इन प्रवाल भित्तियों के निर्माण में मुख्य योगदान प्रवाल जीवों का होता है, किंतु इसके अतिरिक्त अनेक अन्य… प्रवाल भित्ति (Coral Reefs)