Earth

Was the Mediterranean Sea ever dry?

Aug 8th, 2008 | By

Water bodies have always made an impact on the life of human beings, and therefore, you see that most of the top cities lie around famous oceans, seas, lakes and rivers that provide these places with water, which is important for daily life activities and existence. If you normally connect water bodies with beauty and
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Why is glacial ice blue?

Aug 8th, 2008 | By

Glacial ice appears blue to us because all the colors of the visible spectrum (red, orange, yellow, green, blue, indigo, violet) except blue is absorbed by the ice. This blue color wavelength is transmitted which is responsible to make our eyes see the blue color of glacial ice. For this, the light has to move
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How much water is on earth?

Aug 7th, 2008 | By

Water is the most important substance on the earth required by all the living organisms whether human beings, plants or animals. We cannot imagine life on earth without water. 72% of the earth surface is occupied by the water bodies. It approximately 336,000,000,000,000,000,000 gallons which are equal to 326 million trillion gallons of water according
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How old is earth?

Jul 11th, 2008 | By

From different researches and evidences the age of earth is approximately 4.55 billion years. Some of the sedimentary rocks found in North America, Africa, Asia, Greenland and Australia are nearly 3.8 billion years old and gave minerals that are of nearly 4.2 billion years. But we cannot calculate the age of earth on these things
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How are valleys formed?

Jul 4th, 2008 | By

Valleys are depressions in the earth’s crust resulting from platonic movement of other natural factors. Depending on the formation and the shape of the depression, valleys are classified into different categories. Geological structures like ravines, canyons, gullies, kloofs and canyons may also be referred as a valley. Let us discuss about them one by one.
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Why does earth rotate?

Jun 27th, 2008 | By

It is believed that the earth is made up of cloud of gas and dust particles called nebula that collapses under its own gravity and started spinning. When this cloud and dust particle condensed they remained in rotation and the rotation is speeded up when condenses at the center. So it is said that earth
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How was the earth formed?

Jun 25th, 2008 | By

It is believed that the earth was formed nearly 4.6 billion years ago from nebula, a cloud of dust particles and gas. Sun stars and all other planets are formed in a same way. So millions of years ago a hot glowing ball was formed having millions of degree Fahrenheit temperature. Because of this all
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Why is earth round?

Jun 4th, 2008 | By

It is believed that earth is formed four and a half billion years ago from a huge mass of gas. A force pulls everything with the same power from the centre which is called gravitational force and this force is almost equal at every place on the earth. If this force was not equal everywhere
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