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【题目】地球仪是学习地理的重要工具。某中学地理兴趣小组利用自制简易地球仪演示地球运动(图示如下),结合图示完成下面小题。

(1)左图中左手持铅笔(代表地轴)不动,铅笔与桌面始终保持约66.5°的夹角,右手自西向东拨动地球仪演示地球的自转运动能观测到________现象。

(2)右图中手持地球仪演示地球公转运动,应该注意:①保持地轴的空间指向不变;②以光源为中心沿________时针方向移动地球仪。

通过演示,同学们对地球运动产生的地理现象有了更形象的认识。请你结合图文资料和所学解答下面小题。

(3)2019年3月5日上午9时,中华人民共和国第十三届全国人民代表大会第二次会议在人民大会堂开幕。身在莫斯科(东三区)的王先生想观看会议直播,应该在当地时间_____收看,这种时间上的差异是由______引起的;会议开幕时,地球公转到了左图中的______之间。

(4)民间广为流传的九九消寒歌生动记录了“数九”期间当地的气候、物候及农事活动。数九期间太阳直射点介于中图的________之间,移动方向是________

(5)下列生活中的现象由地球公转引起的是_______

A.一天中旗杆影子长短的变化 B.温带地区一年四季的变化

C.一天中阴晴风雨的变化 D.从山麓到山顶气温的变化

(6)当地球转到丁处时,北极圈内出现_____________现象

【答案】昼夜更替 3月5日4时 地球自转运动 丁-甲 ③④ 向北 B 极夜

【解析】

1)由题目可知,右手自西向东拨动地球仪演示地球的自转运动能观测地球上的昼夜更替现象。

(2)将地球仪以光源为中心,要注意两点,一是地轴的空间指向不变,二是以光源为中心,地球按逆时针方向运动。

(3)当北京时间(东8区)是3月5日的上午9点时,身在莫斯科(东三区)的王先生想观看会议直播,应该在当地时间3月5日4时观看;这种时间上的差异是由于地球的自转运动导致的;会议开幕时,地球公转的位置是在图中丁-甲之间。

(4)数九期间是在1月9日-3月4日之间,太阳直射点介于中图的③④之间,是在冬至日至次年春分日之间,移动方向是向北。

5)以上四种现象中,一年中的四季变化是由地球公转运动导致的,一天中的影子变化、天气变化及山顶与山麓的气温差异与公转无关,故选B

6)当地球公转到丁处时,太阳直射在南回归线上,是北半球的冬至日,此时北极圈会出现极夜现象。

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