Navigate Map of Whole world: By clicking and dragging on the World map or use the pan and zoom controls.
A geographic coordinate system enables every location on the Earth to be specified in three coordinates, using mainly a spherical coordinate system.
The Earth is not a sphere, but an irregular shape approximating an ellipsoid; the challenge is to define a coordinate system that can accurately state each topographical feature as an unambiguous set of numbers.
Geostationary satellites (e.g., television satellites) are over the equator at a specific point on Earth, so their position related to Earth is expressed in longitude degrees. Their latitude does not change so is always zero over the equator.
Free IQ test online
An Intelligence Quotient or IQ is a score derived from one of several different standardized tests attempting to measure intelligence. Although the term "IQ" is still in common use, the scoring of modern IQ tests such as the Wechsler Adult Intelligence Scale is now based on a projection of the subject's measured rank on the Gaussian bell curve with a center value (average IQ) of 100, and a standard deviation of 15, although different tests may have different standard deviations. The average IQ scores for many populations have been rising at an average rate of three points per decade since the early 20th century with most of the increase in the lower half of the IQ range: a phenomenon called the Flynn effect. It is disputed whether these changes in scores reflect real changes in intellectual abilities, or merely methodological problems with past or present testing. (Wikipedie)
IQ test lasts approximately 30 minutes and contains 40 questions !
In the IQ test you must focus on the maximum. Test questions are simple. In the IQ test may not use the calculator and paper.