GRID SYSTEMS

1. GRID SYSTEMS

2. 1. Gazetteer

3. 2. Latitude and Longitude SPHERE • Earth is a ________ • 360 in a ________ CIRCLE

4. Lines of Latitude → __________ • Lines run _____ to _____ but measure ______ to ______ of the … • Equator = __ • North Pole = __N • South Pole = ___S • All lines of latitude must be numbered betw. __& ___ • Usually shown in 10 intervals PARALLELS EAST WEST NORTH SOUTH 0 90 90 0 90

6. Low, Middle, & High Latitudes • Low Latitudes = __⁰ to __⁰ North & South • Middle Latitudes = __⁰ to __⁰ North & South • High Latitudes = __⁰ to __⁰ North & South 0 30 30 60 60 90

7. Lines of Longitude → _________ • Lines run ______ to _____ but measure _____ to _____of the … • Prime Meridian = __ (________, England) = Starting Point • 180⁰ approx. = _________ ____ _____ • All lines of longitude must be numbered betw. __⁰ & ___⁰ • Usually shown in 15 intervals. MERIDIANS NORTH SOUTH EAST WEST 0 Greenwich International Date Line 0 180

11. 3. Degrees: • Degree of latitude = Apprx. __ miles • Degree of longitude = Apprx. __ miles at the equator but gets smaller as you move toward the poles • 1 degree = __ minutes • 1 minute = __ seconds (Distance NOT time) 69 69 60 60

13. 4. Hemispheres: • a. 0 to 90N → ________ Hemisphere • b. 0 to 90S → ________ Hemisphere • c. 0 to 180E → ________ Hemisphere • d. 0 to 180W → ________ Hemisphere • All points on the Earth are in at least two hemispheres Northern Southern Eastern Western

15. Other Important Lines • Tropic of Cancer 23 ½⁰ North • Tropic of Capricorn 23 ½⁰ South • Arctic Circle 66 ½⁰ North • Antarctic Circle 66 ½⁰ South