SCIEN-UH 1103 Lecture 4: Earth's components
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Four basic directions: north (n, east (e, south (s, west (w) Four intermediate directions: northeast (ne, northwest (nw, southeast (se, southwest (sw) *sun rises in the east and sets in the west. The red arrow points to earth"s magnetic north. Two ways to give directions using compass: quadrant notation also known as quadrant hearing. The face of a compass is divided into four quadrants which can be further subdivided from 0 to 90. Uses north and south as the principal points: azimuthal notation also known as azimuthal hearing. The compass is divided into 360 degrees, with north 0, east 90, south 180 and west 270. The north direction is the reference point. South pole: prime meridian located in the middle part of the earth vertically measuring 0 degrees, antimeridian or international date line opposite to the prime meridian which measure 180 degrees. Map is a two-dimensional or three-dimensional representations of a particular area.
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