Word of the Day

Nautical Mile: One minute of arc length of latitude or longitude at the equator, or 1852m.

Chapter 2 - Mapping Our World2.1 Latitude and Longitude**Lines of Latitude and Longitude are used to locate places on Earth.**

Longitude - The distance east or west of the Prime Meridian: The prime meridian = 0º Longitude. It is a vertical line that runs through the Royal Naval Observatory in Greenwich, England.

**Lines of Latitude and Longitude are used to locate places on Earth.**

Longitude - The distance east or west of the Prime Meridian: The prime meridian = 0º Longitude. It is a vertical line that runs through the Royal Naval Observatory in Greenwich, England.

Longitude•Lines of Longitude are not parallel.

•They are semicircles from the North Pole to the South Pole.

•Degrees Longitude are measured East and West of the Prime Meridian.

Degrees of Longitude•Degrees are measurements of distances between lines of longitude.•Distance change based on corresponding Latitude.

•1 Degree longitude at equator = 111km. •1 Degree longitude at poles = 0km

•Longitude is also divided into Minutes ( ’ ) and Seconds ( ” ).

Coordinates:•To locate an exact location you need both degrees Latitude and degrees Longitude.

•A coordinate set: (Latitude, Longitude)

•In the picture, Charlotte is located at (35º14’N,80º50’W)

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Time Zones:

•Objective: Students will be able to add and subtract time.•Students will be able to convert local time to Greenwich Mean Time.

Time Zones:

•Because there are 24 hours in a day, there are 24 time zones. •Each time zone is 15º Longitude wide.•In the U.S. we have 6 time zones.

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•The International Date Line is the transition line for calendar days. •It is 180º opposite of the Prime Meridian.•If you cross it going west, you advance a day. •If you cross it going east, you go back a day.

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