The Prime Meridian Earths Yaxis The Prime Meridian

The Prime Meridian (Earth’s Y-axis) The Prime Meridian is a “imaginary” vertical line that passes through the middle of the Earth, splitting it into two equal-sized hemispheres. • Eastern Hemisphere • Western Hemisphere

Prime Meridian Marker A marker showing the actual location of the Prime Meridian in Greenwich, England http: //www. cavinguk. co. uk/holidays/London 200 6/normal/Prime. Meridian. jpg

Longitude- Vertical lines on a globe, that describe how East or West you are from the Prime Meridian. Also called a parallel. • Angles are measured from the center of the earth (vertex of angle) east or west of the Prime Meridian along the equator. 120° West • Notice that they are not parallel and that all lines of longitude intersect at the poles. • Maximum angle of 180 degrees. 60° East

Latitude and Longitude combined Latitude and Longitude Units • Written in Degrees°, Minutes’, Seconds” • Also called DMS • 60 Minutes in 1 Degree • 60 Seconds in 1 Minute http: //cache. eb. com/eb/image? id=64904&rend. Type. Id=4

How to estimate DMS Latitude & Longitude 121° W 120° W 50’ 40’ 30’ 20’ 119° W 50’ 40’ 30’ 20’ 10’ 41° N 50’ 40’ 30’ 20’ 10’ 40° N 50’ 40’ 30’ 20’ 10’ 39° N

How to estimate DMS

Cal Neva Map Lat/Long Practice In your notes, write the lat/long of the following places (D, M) Reno Chico In your notes, describe what is at each of the following coordinates 42° 20’ N, 121° 50’ W Los Angeles San Francisco San Diego Las Vegas Medford Boise 32° 30’ N, 116° 0’ W 34° 0’ N, 120° 0’ W

Quiz Write the lat/long (D, M) or City at the following: 1. Fossil 2. 45° 30’ N, 117° 20’ W 3. Baker City 4. 42° 10’ N, 120° 20’ W