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【题目】读地球的半径和赤道周长图,回答下列问题.

(1)图中A所代表的地理事物的名称是 半径,B代表的地理事物的名称是 半径;A (大于、小于)B,因此,地球是一个 的球体.
(2)C所代表的地理事物的名称是 ,长约 千米.
(3)地球的平均半径长约 千米,地球表面积约 平方千米

【答案】
(1)极;赤道;小于;两极稍扁、赤道略鼓
(2)赤道;4万
(3)6371;5.1亿
【解析】(1)图中A所代表的地理事物的名称是极半径,B代表的地理事物的名称是赤道半径;极半径长度小于赤道半径长度,因此,地球是一个两极稍扁、赤道略鼓的球体.(2)C所代表的地理事物的名称是赤道,长约4万千米,赤道是最长的纬线.(3)地球的平均半径长约6371千米,地球表面积约5.1亿平方千米.所以答案是:(1)极;赤道;小于;两极稍扁、赤道略鼓;(2)赤道;4万;(3)6371;5.1亿.

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