latitude and longitude are imaginary lines that form a grid around our planet. this gridis a way of locating places and bing able to describe their location. Each place has asn address , written as a set of numbers called coordinates. Both latitude and longitude are measured in degrees. Lines of latitude circle. latitude and longitude is useful especially maps to identify the location on the map.
Lines of longitude run vertically from the top of Earth to the bottom.
They divide the world into segments like an orange, meeting at the north
and south poles. Lines of longitude are called meridians. Like latitude, they
also have a starting point – at Greenwich, London. This is called the prime
meridian. The longitude of a place is described in terms of how far east or
west of the prime meridian it is.
Longitude is based on Earth’s rotation through 360 degrees, which
happens once every twenty-four hours. Put another way, Earth turns
180 degrees every twelve hours or 15 degrees every hour. Because of
this connection between time and longitude, Cook could work out his
approximate longitudinal position if he knew the time in Greenwich.
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source SCHOOL JOURNAL LEVEL 4 MAY 2016 CAPTAIN
COOK CHARTING
OUR
ISLANDS by Melanie Lovell-
Smith |
