E

S

N W South America M North America A H B T Y Australia S China Siberia India Asia Central flat map can show the round earth perfectly.) map, because no flat map can show the round earth distance on the (That does not look like the shortest Egypt C is the shortest route for an airplane to fly between two places on the earth. between two to fly Circle is the shortest route for an airplane . Definition: a Great Europe over southern Europe and Turkey (the dashed line) over the Horn of Africa (the dot-dash line) Africa (the dot-dash the Horn of (the dashed line) over Turkey over southern Europe and over the Caspian Sea in central Asia and northern Siberia (the dashed line) over the islands of Indonesia (the dot-dash line) over the Caspian Sea in central over Egypt, in northern Africa (the dashed line) over the southern tip of India, in South Asia (the dot-dash line) (the dashed line) over the southern tip of India, in South Africa over Egypt, in northern Africa P To find the Great Circle between two places on a globe, stretch a piece of string tightly while you hold it on both places. it on both hold while you a piece of string tightly between two places on a globe, stretch To find the Great Circle Miami, Florida (M on the map) to Tokyo, a string from stretch the string. For example, when you Then observe the places under to Alaska (A) closer above. It goes much along the dotted line on the map discover that the airplane would fly Japan (T), you than to Hawai‛i (H)! V Where is the Middle? Investigating How Maps Can Change Global Facts Global Change Can How Maps Investigating is the Middle? Where . Circle how an airplane would fly from Capetown (C, in South Africa) to the Bering Strait (B, between Russia and Alaska): Bering Strait (B, between Russia and in South Africa) to the from Capetown (C, . Circle how an airplane would fly . Use a string and a globe to investigate the Great Circle route that goes from Portugal (P, home of many famous explorers) (P, goes from Portugal route that the Great Circle . Use a string and a globe to investigate . Circle how an airplane would fly from Cape Verde (V, in West Africa) to Shanghai (Y, on the Yangtze River in China): Africa) from Cape Verde (V, in West to Shanghai (Y, on the Yangtze River in China): . Circle how an airplane would fly It is impossible to show the round earth It is impossible to show the round stretching, on flat paper without bending, or changing the size of some things. Background 2 to Singapore (S, an important trading port). Circle how an airplane would fly between those places: trading port). Circle how an airplane would fly to Singapore (S, an important 1 3

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