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Latitude and longitude

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Equator
an imaginary circle around the middle of the earth, halfway between the North Pole and the South Pole
Hemisphere
One half of the Earth, north or south of the equator or west or east of the Prime Meridian.
Latitude
an imaginary line around the Earth parallel to the equator. Measured in degrees
Longitude
distance in degrees east or west of the Prime Meridian. Runs from pole to pole
Prime Meridian
An imaginary line passing through the Royal Observatory in Greenwich, England, which marks the 0° line of longitude.
International Date line
The line of longitude that marks where each new day begins, centered on the 180th meridian. Opposite prime Meridian
Dissipate
To break apart, to disperse
Tropic of Cancer
23.3 N, defines end of tropics north of the equator
Tropic of Capricorn
an imaginary line of latitude located at 23.3 S. It marks the southern boundary of the earth's tropical zone.
Compass Rose
Pattern drawn on maps to designate directions
Fleur de lis
Symbol drawn on maps to designate North. "Flower of life"