Monthly Archives: April 2008

Magnetic Field of Earth

Posted on April 13, 2008 by Rashid Faridi

The Earth has a substantial magnetic field, a fact of some historical importance because of the role of the magnetic compass in exploration of the planet. Structure of the Field The field lines defining the structure of the magnetic field … Continue reading →

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Present Atmosphere Of Earth

Posted on April 12, 2008 by Rashid Faridi

The present atmosphere of the Earth is probably not its original atmosphere. Our current atmosphere is what chemists would call an oxidizing atmosphere, while the original atmosphere was what chemists would call a reducing atmosphere. In particular, it probably did … Continue reading →

Posted in Environment | Tagged , | 3 Comments

Ice Age

Posted on April 11, 2008 by Rashid Faridi

What is an ice age? An ice age is a period of time—usually millions or tens of millions of years—when vast glaciers, called ice sheets, cover much of the Earth’s land surface. Several ice ages have occurred throughout our planet’s … Continue reading →

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Himalayas

Posted on April 10, 2008 by Rashid Faridi

Himalayas, also Him+alaya (Sanskrit for “abode of snow”), mountain system in Asia, forming a broad continuous arc for nearly 2600 km (1600 mi) along the northern fringes of the Indian subcontinent, from the bend of the Indus River in the … Continue reading →

Posted in BIODIVERSITY | 2 Comments