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【题目】我国某校地理兴趣小组分别在二分二至日,于当时正午时刻测量学校旗杆的影子长度,数据记录见下表。据此完成下列问题。

某校地理兴趣小组观察记录表

测量时间(节气)

旗杆影长(米)

5.2

0

5.2

12.9

1表中测量时间②对应的节气是( )

A. 夏至 B. 春分 C. 冬至 D. 秋分

2该学校可能位于( )

A. 辽宁 B. 云南 C. 山东 D. 湖南

【答案】

1A

2B

【解析】

地球在自转的同时还在不断地绕着太阳公转,方向都是自西向东,周期是一年,因为地球在公转时,地轴始终与平面保持66.5°的夹角,所以太阳直射的地方不同,导致各地出现不一样的季节和不一样的昼夜长短,就产生了季节变化和五带的划分。

1由题目可知,我国某校的旗杆影子长短数据中,有一天的时间是0米,说明这一天正午出现了太阳直射现象,是夏至日,故选A。

2由上题可知,该地在夏至日时出现了直射现象,说明该地是有北回归线穿过的省区,以上四个省区中,只有云南省符合条件,故选B。

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