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Autumn Equinox: Definition Facts And Date

Autumn Equinox: Autumn Equinox occurs on September 23. It starts the period of autumn causing the shorter days and placing the foundation of winter season. It occurs due to the passing of sun towards southern hemisphere from north. Many festivals are arranged and celebrated at this event. Some people... readmore

March 28, 2012 | Mohsin Ali | No Comments | 449 views

What explains the polar front theory?

The polar front theory explains the origin of cyclones. In meteorology the polar front is the boundary between the polar cell and the Ferrel cell in each hemisphere. At this boundary a sharp gradient in temperature occurs between these two air masses, each at very different temperatures.  Read More →

March 29, 2011 | Afifa Gillani | No Comments | 487 views

What is the petrology?

petrology is the study of rocks in the earth’s crust. Petrology is the branch of geology that studies rocks and the conditions in which rocks form.  Read More →

March 22, 2011 | Imran Jutt | No Comments | 977 views

From where the ores in the earth’s crust have come?

The ores in the earth’s crust have come from frequent volcanic eruption. A natural disaster is defined as a hazard which occurs naturally, that is a disaster that is not brought about by acts of human beings. A natural disaster might be caused by earthquakes, flooding, volcanic eruption, landslide... readmore

| Imran Jutt | No Comments | 426 views

Distance Around The World

The distance around the world is about 25000 miles which is approximate circumference of the earth. readmore  Read More →

| Afifa Gillani | No Comments | 894 views

Tropic of Capricorn is located at:

23° 27’ South of the Equator South Of The Equator Picture  Read More →

| Shero Naqvi | No Comments | 431 views

What is the longest day of the year in the northern hemisphere?

In hemisphere, the longest day is June 21. Its the beginning of summer in the northern hemisphere, usually June 21. This is the day with the longest period of daylight.  Read More →

| Afifa Gillani | No Comments | 44 views

How much does the earth rotate in one second?

The Earth rotates around its axis once in 24 hours and thus covers 3600 in 24 hours earth takes 4 minutes to cover one degree of latitude. 360 degrees in 24 hours 15 degrees per hour (15 / 3,600) ( 1/240 ) degree per second 0.25 minute of angle per second 15 seconds of angle per second. At the equator,... readmore

| Afifa Gillani | 1 Comment | 191 views

What is the shortest distance between two points on the surface of earth?

Great Circle refers to shortest distance between two points on the surface of earth. A great circle, also known as a Riemannian circle, of a sphere is the intersection of the sphere and a plane which passes through the center point of the sphere, as distinct from a small circle. Any diameter of any great... readmore

| Afifa Gillani | No Comments | 766 views

What is Biosphere?

Biosphere is the part of the earth’s crust water and atmosphere where plants and animals can subsist. Our biosphere is the global sum of all ecosystems. It can also be called the zone of life on Earth. From the broadest bio-physiological point of view, the biosphere is the global ecological system... readmore

| Afifa Gillani | No Comments | 369 views
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