1. Viewpoints
Chapter 6, Section 2

2. Latitude and Longitude
An imaginary grid system used to accurately locate any point on Earth.

3. Latitude and Longitude
Equator
Imaginary line half way between the north and south poles.
Separates Earth into the northern hemisphere and the southern hemisphere.

4. Latitude and Longitude
Lines of Latitude (parallels)
Lines that run parallel to the equator

5. Latitude and Longitude
Distance north or south of the equator.
Measured in degrees (0 to 90 N or S).
Degrees are broken into minutes and seconds.

6. Latitude and Longitude
Prime Meridian
Imaginary line that runs from the north pole to the south pole through the Greenwich Observatory.
Intersects the equator at 90 degrees.
Divides the earth into eastern and western hemispheres.

7. Latitude and Longitude
Lines of Longitude (meridians)
Lines on either side of the prime meridian.
All lines of longitude meet at the poles.

8. Latitude and Longitude
Distance east or west of the prime meridian.
Measured in degrees (0 to 180 E or W)

9. Latitude and Longitude
How to write latitude and longitude
Coordinates are always written with latitude first.
Ex:
(45° N, 100° W)

10. Time Zones Time Zones Earth is divided into 24 time zones.
Each time zone is approximately 15 degrees wide (longitude).
Adjusted for political boundaries.

11. Calendar Dates International Date Line
Located near the 180 degree meridian.
Traveling west – you jump forward a day.
Traveling east – you jump back a day.