【題目】【觀察現(xiàn)象】讀圖,回答問題。

(1)當(dāng)?shù)厍蜻\動到上圖中的A處時,太陽直射在_______(緯線)上;當(dāng)?shù)厍蜻\動在上圖中C和D位置之間時,泰安市晝夜長短情況是____________________。

(2)泰安市某學(xué)校的小明同學(xué)在探究學(xué)習(xí)活動中,分別在上圖的四個節(jié)氣當(dāng)天正午時刻測量學(xué)校旗桿影子長度,并運用地圖的有關(guān)知識繪制出了下左圖和下右圖。據(jù)圖回答問題。

小明學(xué)校的教學(xué)樓位于旗桿的______方向;下右圖中甲、乙、丙、丁四幅旗桿影子示意圖,為冬至日觀測到的是___幅;6月14日學(xué)業(yè)水平考試時,小明學(xué)校的旗桿影子長度最接近_____幅,此時,地球應(yīng)運動在上圖①、②、③、④段中的_____段。

【答案】1)赤道() 晝短夜長

2)西 甲 丁

【解析】試題分析:

1)從地球公轉(zhuǎn)軌道圖可以看出,當(dāng)?shù)厍蚬D(zhuǎn)到A處時,太陽直射赤道,為北半球的春分日,此時全球晝夜等長;當(dāng)?shù)厍蚬D(zhuǎn)到C處時,太陽直射赤道,為北半球的秋分日,此時全球晝夜等長;當(dāng)?shù)厍蚬D(zhuǎn)到D處時,太陽直射南回歸線,為北半球的冬至日,此時北半球白晝最短黑夜最長;當(dāng)?shù)厍蜻\動到CD位置之間時,太陽直射點位于南半球,此時泰安市晝短夜長。

2)從下左圖可以看出,根據(jù)指向標定向法可知:學(xué)校的教學(xué)樓位于旗桿的正西方向;冬至日時,北半球的太陽高度角最小,其影子最長,所以甲、乙、丙、丁四幅旗桿影子示意圖可知,觀測到的是甲幅;614日初中學(xué)業(yè)考試時,接近夏至日,北半球的太陽高度角較大,其影子較短,所以小明學(xué)校的旗桿影子長度最接近丁幅;此時地球應(yīng)運動在上圖中的段。

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