【題目】讀下面地球表面的光照?qǐng)D，請(qǐng)回答問題。

（1）這一天是___ _月________日，是二分二至日中的哪個(gè)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(zhǎng)短狀況是________，B點(diǎn)比A點(diǎn)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(shí)非洲在__________，我國(guó)在__________。

【答案】（1） 12 22 冬至

（2）南回歸線 冬季 夏季

（3） 晝夜等長(zhǎng)（相等） 多 高

（4） 晝半球 夜半球

【解析】試題分析：

（1）由上圖的光照?qǐng)D可以看出，此時(shí)，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12月22日前后，是北半球的冬至日。

（2）由上題可知，此時(shí)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(shí)間最長(zhǎng)，進(jìn)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(zhǎng)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?qǐng)D可以看出，此時(shí)非洲是處于晝半球，而我國(guó)則處于夜半球。

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