Americas: Physical ARCTIC OCEAN NORTH PACIFIC NORTH OCEAN ATLANTIC OCEAN Gulf of Mexico Caribbean Sea 0° Equator SOUTH PACIFIC OCEAN LEGEND N National boundary River Mountains W SOUTH E ATLANTIC km 0 500 1000 S OCEAN mi 0 500 1000 170°W 160°W 150°W 140°W 130°W 120°W 110°W 100°W 90°W 80°W 70°W 60°W 50°W 40°W 30°W 20°W 10°W 80 ° N 70°N 60°N 50 ° N 40 ° N 30°N 20 °N 1 0 ° N S ° 10 20°S °S 30 S ° 40 S ° 0 5 S ° 60