[题目]冬至日(12月22日)凌晨4点(地方时)一架飞机从甲地 (60°N.100°W)起飞.沿最近航线匀速飞行.8小时后抵达乙地 (60°N.80°E).据此回答下列各题[1]A. 一直不变 B. 先朝东北后朝东南C. 先朝西北后朝西南 D. 先朝北后朝南[2]A. 12小时 B. 16小时 C. 20小时 D. 24小时题目和参考答案——青夏教育精英家教网—

题目内容

【题目】冬至日(12月22日)凌晨4点(地方时)一架飞机从甲地 (60°N、100°W)起飞，沿最近航线匀速飞行，8小时后抵达乙地 (60°N、80°E)。据此回答下列各题

【1】

A. 一直不变 B. 先朝东北后朝东南

C. 先朝西北后朝西南 D. 先朝北后朝南

【2】

A. 12小时 B. 16小时 C. 20小时 D. 24小时

【答案】

【1】D

【2】A

【解析】试题分析：

【1】根据材料，两地的纬度相同，经度相差180°，位于相对的两条经线上，一个经线圈上。都在北半球，沿最短距离飞行，即在经线圈飞行，只有正南、正北方向，飞机途中航向先朝北后朝南，D对。

【2】结合前面分析，这架飞机沿最短航线飞行，跨越纬度共60°，路程约6600千米。若以同样速度，沿60°N纬线飞行，需要跨经度180°，实际距离相当于赤道上经度90°间隔的长度，约9900千米。抵达乙地大致需要 12小时，A对。B、C、D错。

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