Questions and Answers
What does latitude measure?
Distance north or south of the Equator
What is the range of longitude?
0° to 180° East and -180° West
What is the format of geographic coordinates?
Latitude (degrees, minutes, seconds), Longitude (degrees, minutes, seconds)
What is the most precise format of geographic coordinates?
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What is the least precise format of geographic coordinates?
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Study Notes
Latitude and Longitude
Latitude vs Longitude
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Latitude:
- Measures distance north or south of the Equator
- Ranges from 0° at the Equator to 90° at the North Pole and -90° at the South Pole
- Also known as parallels
-
Longitude:
- Measures distance east or west of the Prime Meridian
- Ranges from 0° at the Prime Meridian to 180° East and -180° West
- Also known as meridians
Geographic Coordinates
- A system of locating points on the Earth's surface using latitude and longitude
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Format:
- Latitude (degrees, minutes, seconds) + Longitude (degrees, minutes, seconds)
- Example: 37° 45' 22" N, 122° 26' 55" W
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Types of Coordinates:
- Degrees, Minutes, Seconds (DMS): most precise format
- Degrees, Decimal Minutes (DDM): less precise than DMS, but more readable
- Decimal Degrees (DD): least precise, but most commonly used in GPS systems
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