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【題目】讀下面地球表面的光照圖,請回答問題。

(1)這一天是___ _________日,是二分二至日中的哪個節(jié)氣 ________。

(2)太陽直射的緯線在__________,北半球是__________季,南半球是 。

(3)B地晝夜長短狀況是________,B點比A點單位面積上得到的太陽光熱_______,氣溫_______。

(4)用斜線表示出夜半球,此時非洲在__________,我國在__________。

【答案】(1) 12 22 冬至

(2)南回歸線 冬季 夏季

(3) 晝夜等長(相等) 多 高

(4) 晝半球 夜半球

【解析】試題分析:

1)由上圖的光照圖可以看出,此時,太陽直射在南回歸線上,北極圈出現(xiàn)了極晝現(xiàn)象,這一天是一年中的1222日前后,是北半球的冬至日。

2)由上題可知,此時太陽直射在南回歸線,北半球各地的正午太陽高度最小、白晝時間最長,進入一年中的冬季。

3)由圖可知,B是處于地球的最中間的赤道,在赤道上,全年都是晝夜等長的,B與A相比,B處的緯度低,正午太陽高度角大,獲得太陽光熱多、氣溫更高。

4)由圖中的光照圖可以看出,此時非洲是處于晝半球,而我國則處于夜半球。

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