# HEMISPHERES LATITUDE LONGITUDE HEMISPHERES The world is shaped

• Slides: 11

HEMISPHERES, LATITUDE & LONGITUDE

HEMISPHERES ü The world is shaped like a sphere ü ü (globe) It is divided into hemispheres (hemi = half, sphere = ball) Divided at the: a) Equator (northern and southern hemisphere) b) Prime Meridian (eastern and western hemisphere)

HEMISPHERES ü In which hemisphere do we live? ü Northern and Western hemispheres ü Hemispheres give us a good general idea of location in the world üTo be more precise we use grids made up of latitude and longitude

LATITUDE ü also called “parallels” ü lines drawn horizontally (east to west) on the surface of the earth ü remember “lat is flat” ü latitude lines begin at the Equator (0°) and are numbered towards the North and South Poles

LATITUDE ü lines are always equal distance from each other all the way around the globe ü 1 degree of latitude to another is 111 km (i. e. 40°N to 41°N is 111 km) üHow many km is the 49 th parallel from the equator? ü 49 x 111 km = 5439 km

LATITUDE ü Latitude lines are NOT each the same distance around the earth ü lines become shorter as you move away from the equator

LONGITUDE ü also called “meridians” (see pg 19) ü lines drawn vertically (north to south) on the surface of the earth ü all longitude lines meet at the poles ü they are NOT equal distance apart

LONGITUDE ü numbering begins at the Prime Meridian (0 ) which passes through Greenwich, England ü rest of the lines are labeled according to their angle (east or west) from the Prime Meridian at the North Pole

LATITUDE AND LONGITUDE ü latitude and longitude lines ARE NOT the same as eastings and northings!!! ü Read and write latitude and longitude lines as: ü latitude first (N or S), then longitude (E or W) ü i. e. 45 N 123 W

LATITUDE AND LONGITUDE ü to be more specific in pinpointing locations, each degree of latitude and longitude is further divided into 60 minutes ü i. e. Kitchener, ON 43 27 N 80 30 W ü this is the same idea as the difference between the 4 and 6 figure grid references

ASSIGNMENT ü Complete Geolab 15 üPicture Sources from: n http: //www. cruising. sailingcourse. co m/images/latitude. gif