1. It’s all about location, location, location
Where on Earth are we?
It’s all about location, location, location

2. Where are we RIGHT NOW?

3. To identify where we are on the earth, we use lines of latitude and longitude to make a grid on Earth’s surface
Every point on the earth has a unique address using latitude and longitude

4. Latitude

5. Latitude
Imaginary lines around the earth, used to measure distance North or South of the equator
Also known as parallels (they are all parallel to each other)
Lines of latitude run East-West around the earth

6. Latitude
Latitude is measured in DEGREES NORTH (°N) or DEGREES SOUTH (°S) of the equator
Toronto is at about 43 °N
This means Toronto is 43° North of the equator
Rio de Janiero, Brazil is located at 23°S
Rio is 23° south of the equator

7. Important Lines of Latitude
Equator (0° N or S)
Tropic of Cancer (23.5° North)
Tropic of Capricorn (23.5° South)
Arctic Circle (66.5° North)
Antarctic Circle (66.5° South)

8. Longitude Imaginary lines used to measure distance east or west
Lines of longitude are also called meridians
Lines of longitude run north-south, meet (converge) at the north and south poles

9. Line of Reference for Longitude?
Latitude measures distance north and south of the Equator
What line do we use to measure longitude?

10. Greenwich Observatory near London, UK

11. Prime Meridian at Greenwich
Chosen as the reference point from which we measure longitude
Longitude is measured east or west of the Prime Meridian, which runs north-south straight through the Greenwich Observatory
More on WHY when we talk about time zones

12. Longitude
Longitude is measured in DEGREES East (°E) or DEGREES West (°W) of the Prime Meridian
Toronto is located at 79°W
Toronto is 79° west of the Prime Meridian
Istanbul, Turkey is located at 28°E
Istanbul is 28° east of the Prime Meridian

13. Important Lines of Longitude Prime Meridian (Greenwich, UK)
0 degrees longitude
International Date Line
180° E or 180° W (exactly half way around the world from Prime Meridian)

14. Latitude and Longitude
Any location on earth can be identified using the latitude and longitude
Latitude & Longitude are measured in Degrees (°)
Each degree is made up of 60 minutes (‘)
Each minute is made up of 60 seconds (“)
Northern Secondary School is located at
43° 42’ N, 79° 23’ W
43 degrees, 42 minutes North; 79 degrees, 23 minutes West

15. 43° 42’ N, 79° 23’ W