Latitude and Longitude

2. Latitude and Longitude • Every single location on Earth is described by 2 numbers: Latitude and Longitude. • Latitude and longitude are a type ofcoordinate system

3. Latitude • Definition: Latitude measures the distance in degreesNORTHand SOUTHof theEQUATOR. • Latitude lines are horizontal. They look like this: • Because they run parallel to the EQUATOR, they are also called parallels. ALL parallels are 360ºcircles!

5. The Equator • The Equator is the imaginary circlefound at 0º Latitude- it “splits” the Earth exactly in half, leaving a Northern half and a southern half.

6. Latitude Values • Each line of latitude north of that gets higher until you get to 90° N. That is the North Pole. • Each line of latitude south of the equator gets higher until you get to 90° S. That’s the South Pole.

7. Special Latitude Lines 1. Tropic of Cancer - found at 23 ½º North of the Equator. 2. Tropic of Capricorn – found at 23 ½ º South of the Equator. 3. Artic Circle – 66 ½° North Latitude 4. Antarctic Circle – 66 ½ ° South Latitude Ants on the ground, get it antactic its in the south

8. 66.5

9. Where is Polaris?? http://ecuip.lib.uchicago.edu/diglib/science/cultural_astronomy/interactives/polaris/polaris.swf

10. The angle of the North Star, also known as Polaris, EQUALSthe NORTH Latitude you are at.

12. How can I find Polaris in the sky?

13. Lets take a bike ride and see what happen. • http://www.onr.navy.mil/focus/spacesciences/animation/observingsky/kid.swf

14. Longitude • Definition: Longitude lines measure the distance in degrees EASTand WEST of the PRIME MERIDIAN. • Longitude lines are vertical. They look like this: • These lines are also known as Meridians.

16. The Prime Meridian • The Prime Meridian is a HALF circle that runs from the North pole to the Southpole. • It is also 0° however it is 0° longitude. It does NOT run all the way around the Earth. The line on the other side is 180°.

17. The Prime Meridian • The Prime Meridian divides the Earth into a west half (western hemisphere) and an east half (eastern hemisphere). • The 180° line is known as the international date line.

19. Now please start or continue working on your review book assignment. We will do time zones as a class together.