题目内容

【题目】读下图,完成下列问题。(14分)

1)图中A点的位置(经、纬度): ;图中B点的位置(经、纬度):

2A点在东西半球的 半球,在南北半球的 半球。

3B点在 (温度带),阳光 (直、斜 )射。

(4)A点和B点中,位于南北半球分界线上的是________.(填字母)

【答案】

(1)(20°N,170°W) (0°,10°E)

(2)

(3)热带

(4)B

【解析】

试题分析:

(1)在经纬网上,经线的度数叫做经度,若相邻两条经线的经度向东增大,就是东经,用符号E表示,若相邻两条经线的经度向西增大,就是西经,用符号W表示;纬线的度数叫纬度,若相邻两条纬线的纬度向北增大,就是北纬,用符号N表示,若相邻两条纬线的纬度向南增大,就是南纬,用符号S表示。据图可知:A点的坐标是(20°N,170°W);B点的坐标是(0°,10°E)。

(2)我们以赤道为界将地球划分为南北半球,赤道以北为北半球,以南为南半球;以20°W和160°E组成的经线圈为界将地球划分为东西半球,20°W以东、160°E以西为东半球,20°W以西、160°E以东为西半球。据图可知:A点位于东半球、北半球。

(3)习惯上,人们根据各地获得太阳光热的多少,以及是否有太阳光线的垂直照射、是否有极昼和极夜现象,将地球表面划分为五个温度带,其中,回归线之间的区域有太阳直射现象,为热带;极圈以内的区域有极昼极夜现象,为寒带;回归线和极圈之间的区域既无太阳直射又无极昼极夜现象,为温带。据图可知:B点位于赤道上,属于热带,有阳光直射现象。

(4)我们以赤道为界将地球划分为南北半球,赤道以北为北半球,以南为南半球。据图可知:B点位于南北半球分界线上。

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