地理人教版七年級(jí)上冊(cè)經(jīng)緯線和經(jīng)緯度（第一課時(shí)）.ppt

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1、北極南極地軸經(jīng)緯天地形狀指示方向長(zhǎng)度經(jīng)線緯線南北東西半圓圓赤道最長(zhǎng)，向兩極逐漸縮短相等經(jīng)線（子午線）緯線緯線緯度赤道（）0°30°60°90°30°60°90°緯度0°20°90°20°40°80°40°60°赤道北緯“N”南緯“S”0°15°30°45°60°90°75°15°30°45°60°75°90°北增北緯南增南緯60°N60°S赤道北緯“N”南緯“S”0°15°30°45°60°90°75°15°30°45°60°75°90°北增北緯南增南緯60°N60°S赤道北緯“N”南緯“S”0°15°30°45°60°90°75°15°30°45°60°75°90°南增南緯北增北緯經(jīng)線

2、本初子午線180o經(jīng)度（）0°0°15°30°45°60°75°90°120°105°135°150°165°180°30°45°15°60°75°90°105°120°135°150°165°西增西經(jīng)東增東經(jīng)135°E135°W西經(jīng)“W”東經(jīng)“E”本初子午線本初子午線15°30°45°60°90°30°45°60°90°75°75°15°東增東經(jīng)西增西經(jīng)0°90°180°165°135°120°150°165°150°120°135°105°90°105°西增西經(jīng)東增東經(jīng)0°90°180°90°90°30°30°60°60°150°150°120°120°西增西經(jīng)東增東經(jīng)西增西經(jīng)30°

3、60°90°120°150°180°0°30°60°90°120°150°180°西增西經(jīng)東增東經(jīng)本初子午線30°60°90°120°150°180°0°30°60°90°120°150°180°30°60°90°120°150°180°0°30°60°90°120°150°180°本初子午線西增西經(jīng)東增東經(jīng)60°90°120°150°180°30°60°90°120°150°180°0°30°本初子午線西增西經(jīng)東增東經(jīng)項(xiàng)目緯度經(jīng)度標(biāo)度范圍度數(shù)起點(diǎn)度數(shù)變化規(guī)律半球界線高中低緯地區(qū)0°（赤道）0°（本初子午線）0°—90°（赤道）（極點(diǎn)）0°—180°（本初子午線）東經(jīng)（E）西經(jīng)（W）北緯

4、（N）南緯（S）從赤道向兩極漸大從本初子午線向東（西）逐漸增大，直到180°經(jīng)線度數(shù)表示方法謝謝!