[题目]学习地球自转时.同学们开展了一系列活动.读图.回答下面小题.[1]用灯泡模拟太阳.用地球仪观察昼夜现象.需要选择的是A. B. C. D. [2]演示地球自转.正确的做法是A. 面向地球仪.自左向右拨动地球仪B. 将地球仪垂直放在桌面上C. 地轴的指向有规律的发生变化D. 移动地球仪沿椭圆轨道做水平运动[3]演示结束后.同学们分别绘制了地球自转示意图.其中最合理的是A. B. 题目和参考答案——青夏教育精英家教网—

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【题目】学习地球自转时，同学们开展了一系列活动。读图，回答下面小题。

【1】用灯泡模拟太阳，用地球仪观察昼夜现象，需要选择的是

A. B. C. D.

【2】演示地球自转，正确的做法是

A. 面向地球仪，自左向右拨动地球仪

B. 将地球仪垂直放在桌面上

C. 地轴的指向有规律的发生变化

D. 移动地球仪沿椭圆轨道做水平运动

【3】演示结束后，同学们分别绘制了地球自转示意图(如图)，其中最合理的是

A. B. C. D.

【答案】

【1】D

【2】A

【3】B

【解析】人们根据地球的大小，按一定的比例缩小成一个模型就成了地球仪，地球自转的方向是自西向东，太阳直射点会在南北回归线之间来回移动。

【1】用灯泡模拟太阳，用地球仪观察昼夜现象，需要选择的是不透明球体，才能体现昼夜现象，故选D。

【2】演示地球自转，面向地球仪，自左向右拨动地球仪；将地球仪斜放在桌面上；地轴的指向保持不变；地球仪保持不动，故选A。

【3】地球在自转时，面向太阳这一面是昼半球，背向太阳这一面是夜半球，昼半球与夜半球的分界线与太阳光垂直，故选B。

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