1. Latitude and Longitude
How do we find places on maps?

2. Latitude What is Latitude? Lines of Latitude run horizontally
Latitude is measured in degrees.
The Equator is 0 degrees Latitude.
Lines of Latitude locate places North or South of the Equator.
The North Pole is 90 degrees N Latitude, and the South Pole is 90 degrees S Latitude.

4. Longitude What is longitude? Lines of Longitude run vertically.
They are also called Meridians.
The Prime Meridian is found in Greenwich, England.
The Prime Meridian is 0 degrees Longitude.
Lines of Longitude locate places East or West of the Prime Meridian.
There are 180 degrees of east Longitude, and 180 degrees of west Longitude.

6. On the map horizontal lines
are lines of latitude and....
vertical lines are lines of
longitude.
The horizontal line is the equator
and the vertical line which runs
through Greenwich, England
is the Prime Meridian.
Equator
Prime Meridian

7. Any location north of the equator is a NORTH LATITUDE

8. Any location south of the equator is a SOUTH LATITUDE

9. Any location west of the prime meridian is a WEST LONGITUDE

10. Any location east of the prime meridian is an EAST LONGITUDE

11. We can divide the Earth into quadrants: NE where all
latitudes are NORTH and all longitudes are EAST.

12. We can divide the Earth into quadrants: SE where all
latitudes are SOUTH and all longitudes are EAST.

13. We can divide the Earth into quadrants: SW where all
latitudes are SOUTH and all longitudes are WEST.

14. We can divide the Earth into quadrants: NW where all
latitudes are NORTH and all longitudes are WEST.
Notice that EVERY point in the United States will have a NORTH
latitude and a WEST longitude since we are in the NW quadrant.

15. Latitude
Longitude A B C D E F G H I J

16. Time Zones Time zones are broad strips that measure 15 degrees wide.
Time zones differ from their neighboring time zones by 1 hour.
The continental U.S. has 4 time zones, Eastern, Central, Mountain, and Pacific.
In the Spring we shift the clocks 1 hour ahead. This is called Daylight Saving Time.
In the Fall we shift the clocks 1 hour back.

17. Time Zones (cont…) Local Time and Universal Time
Local Time- is what we use everyday, and regulates our lives.
Examples of Local Time are: meal time, sleep time, work time, and school time
Universal Time- is what we use when we need a time that is agreed upon marking time world-wide.
An example when Universal Time was used was when a supernova in 1987 was first seen. Astronomers, and Astronauts use Universal Time..

18. 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

19. Time Zones
The International Dateline was established following the 180th meridian, where ever we cross it the date advances 1 day ( if you are going west), or goes back 1 day (if you are going east).

20. 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

21. Mapping the Earth Humans can map just about anything.
The values can change over time.
There are 3 types of fields
Isotherm- temperature
Isobar-air pressure
Contour map- show elevation
Once we measure an area we can make a map of what we are measuring.
We then connect the points that have equal values.

22. Sample Isoline Map 58 60 70 75 87 62 80 90 60 84 66 66 75 79 70 95 82 70 78 90 73 86 74 79 75 80 82 96 80 94 81 92 81 90 93

23. Summary 1.What do lines of Latitude and Longitude combine to make?
A grid.
2.Compare and Contrast Latitude and Longitude.
Latitude- horizontal, north- south, parallels
Longitude- vertical, east-west, meridians
3.What is 0 degrees Latitude?
Equator
4.What is 0 degrees Longitude?
Prime Meridian
5.How many time zones do we have in the U.S.A.?
4- Eastern, Central, Mountain, Pacific
6. Explain the difference between Local Time, and Universal Time.
Local time- used everyday Universal Time- is used for a planetary event, or for astronomy
7. What are equal points of temperature, pressure, and elevation called?
Isotherm –temperature Isobar – pressure Contour – elevation