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Latitude and Longitude
- 2. Latitude lines run east/west but they measure north or south of the equator (0°) splitting the earth into the Northern Hemisphere and Southern Hemisphere.
- 3. Latitude North Pole South Pole Lines of latitude are numbered from 0° at the equator to 90° N.L. at the North Pole. Lines of latitude are numbered from 0° at the equator to 90° S.L. at the South Pole. ] [ 90 80 70 60 50 40 20 30 10 90 80 70 60 50 40 20 10 30
- 4. Latitude The North Pole is at 90° N The South Pole is at 90° S The equator is at 0° latitude. It is neither north nor south. It is at the center between north and south. 40° N is the 40° line of latitude north of the equator. 40° S is the 40° line of latitude south of the equator.
- 5. Longitude Lines of longitude begin at the Prime Meridian. 60° W is the 60° line of longitude west of the Prime Meridian. The Prime Meridian is located at 0°. It is neither east or west 60° E is the 60° line of longitude east of the Prime Meridian. W E
- 6. Longitude Lines of longitude are numbered east from the Prime Meridian to the 180° line and west from the Prime Meridian to the 180° line. PRIME MERIDIAN WestLongitude EastLongitude 180° N EW S North Pole
- 7. Prime Meridian The Prime Meridian (0°) and the 180° line split the earth into the Western Hemisphere and Eastern Hemisphere. Prime Meridian Western Hemisphere Eastern Hemisphere Places located east of the Prime Meridian have an east longitude (E) address. Places located west of the Prime Meridian have a west longitude (W) address.
- 8. INTERNATIONAL DATE LINE 180° • SEPARATES 2 CALENDAR DAYS. America to Asia – gain a day Asia to America – lose a day
- 9. By combining latitude and longitude, any location can be pinpointed
- 10. A location’s coordinates (____° N or S, ____ ° E or W)
- 11. Application N W E S North America is in the Northern Hemisphere because it is north of the Equator. North America is in the Western Hemisphere because it is west of the Prime Meridian.
- 12. Fractions of a Degree • 1 degree = 60 minutes or 1 minute is 1/60th of a degree • Use minutes if location is not directly on the latitude/longitude line • Written ----- Degree/minute = XX° xx’ compass direction 30’ is half-way between degrees
- 13. LONGITUDE AND TIME • The world rotates (spins) 360° in 24 hours. 360° / 24 hours = 15° per hour • The world has 24 time zones, each l5° apart. THERE IS A 1 HOUR TIME DIFFERENCE FOR EVERY 15° OF LONGITUDE
- 14. Greenwich, England is the logical starting point for time zones • The world rotates west to east (counterclockwise), time zones to the east are ahead of the those time zones to the west
- 15. ANOTHER CHEESY SAYING • EAST INCREASE Time is forward to all places to the east • WEST LESS Time is backward to all places to the west
- 16. East Increase – West Less (1 hr per l5°) If it 9 p.m. at Position D, what time is it at position C? Position B? If it is 1 p.m. at Position X, at which location is the time 5
- 17. Earth rotates west to east Solar time is based on the position of the sun NIGHT IS FALLING ON EARTH Look at the East Coast of the United States. The lights are already lit. California the sun is still visible.
- 18. This pictures shows AMERICAN CITIES at night.
- 19. Saguenay Ottawa Sept-Iles Mexico City Québec Montréal St.John Those light are Boston, New York, Philadelphia and Washington. Toronto Detroit Miami Havana Puerto Rico Houston Dallas It’s still daylight in California Thunder Bay Port-au-Prince
- 20. NIGHT IS FALLING ON EARTH. Look at Paris and Barcelona, the lights are already lit, meanwhile in London, Lisbon and Madrid the sun is still visible. Looking south, we can see the islands in the middle of the ocean. We have a perfect view of the British Islands, Iceland and Canada.
Hinweis der Redaktion
- TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)
- TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)
- TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)
- TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)
- TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)
- If you took a cruise on a ship, circumventing, or traveling around the entire planet, you would experience firsthand a phenomena that would help you understand the importance of an international dateline. An explorer by the name of Ferdinand Magellan did just that in the year 1519. Magellan along with 241 men set out to travel around the entire Earth. These men kept very careful records as they traveled. Yet, when they returned, they found that their calendars were off by one day with the calendars of everyone in their home countries. What happened? How did these men loose an entire day? The day was not lost all at once. It was lost little by little, as the traveled around the Earth. If you stay in one place, a day lasts 24 hours. However, if you travel the opposite direction of the rotation of the Earth, your day will be slightly longer than 24 hours, because you are traveling ahead of the setting sun. If you travel with the rotation of the Earth, your day will be slightly shorter than 24 hours, because you are traveling into the sunset. At any one moment there are actually two days on the Earth at the same time. A new day begins at mid-night on the International Dateline. It travels around the Earth, until 48 hours later it ends back at the International dateline. If you were to travel across the International Dateline, the date would change either forward, or backward. This line actually lies in the middle of a time zone. This means that the hour on the clock would not change, as you crossed over, just the date.
- TEKS: Social Studies – 6.3 (B), Posing and answering questions about geographic distributions and patterns 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)