【題目】讀地球公轉(zhuǎn)示意圖，回答以下問題。

a、當(dāng)?shù)厍蚬D(zhuǎn)到A點時，平頂山市的節(jié)氣是 ；這一天屬于北半球的 季，南半球的 季。此時，太陽直射在 (緯度)上，時間是 前后。

b、當(dāng)?shù)厍蚬D(zhuǎn)到B點時，北半球得到的太陽光熱最 ，正午太陽高度角最 。

c、當(dāng)?shù)厍蚬D(zhuǎn)到D點時，北半球晝長 (大于、小于、等于)夜長，日期是 。

d、當(dāng)?shù)厍蚬D(zhuǎn)到A、C點時，全球晝夜長短情況是 。

【答案】a、春分日 春季 秋季 赤道 3月23日 b、多 大 c、小于 12月22日 d、晝夜等長

【解析】

試題分析： a、讀地球公轉(zhuǎn)示意圖可知，當(dāng)?shù)厍蚬D(zhuǎn)到圖中A點位置時，平頂山市的節(jié)氣是春分日；這一天屬于北半球的春季，由于地球的公轉(zhuǎn)，南北兩個半球的季節(jié)相反，此時南半球是秋季。此時，太陽直射在赤道0°緯線上，時間是3月23日前后。

b、讀地球公轉(zhuǎn)示意圖可知，當(dāng)?shù)厍蚬D(zhuǎn)到圖中B位置點時，是6月22日前后，此時時北半球的夏季，太陽光直射北回歸線，此時北半球得到的太陽光熱最多，正午太陽高度角最大，物體的影子最短。

c、讀地球公轉(zhuǎn)示意圖可知，當(dāng)?shù)厍蚬D(zhuǎn)到圖中D位置點時，太陽直射南回歸線，北半球晝長小于夜長，晝最短，夜最長。日期是12月22日前后。

d、讀地球公轉(zhuǎn)示意圖可知，圖中A點是北半球的春分日，C點是北半球的秋分日。當(dāng)?shù)厍蚬D(zhuǎn)到A、C兩點時，太陽直射赤道，全球晝夜等長。

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