SCIENCES(social)

Longitude and latitude●The girds of intersecting lives on a globe enables us to identify every location on Earth whith a set of numbers or leters . The symbol for degrees is º.Ptolemy wrote that the furtest point at the right or left side of a circle or a sphere is 90 degrees from the top .There are 180º between any two sides of a circle or sphere.●This means that the north and south poles are 180º apart from one another , and both poles are 90º from the Equator●

Parallels● All east – west lines are equidistants from each

other .Every point on a given east west line, therefore ,in the same distance from the equator , the same distance from the North Pole ,and the same distance from the South Pole. For this reason east west lines , or lines of latitude are comonly to as parallels of latitude , or simply parallels.

Meridians

● They are north – south lines,or lines of longitude .They are commonly refered to as meridians of longitude , or simply meridians . The zero , or base line for numbering the north – south lines , is called the prime meridian or Greenweech Meridian . Each meridian goes only halfway around the Earth from Pole to

● Pole . Each has a twin on the other side of the other side of the Earth.Like the Prime Meridian and the 180th Meridian , all such pairs of Meridians form circles that cut the Earth into hemispheres.

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● TERESA AND MARTA