【題目】讀地球繞太陽公轉(zhuǎn)示意圖(如圖1),回答下列問題.
(1)地球公轉(zhuǎn)的方向 , 周期 .
(2)地球公轉(zhuǎn)位置在B點(diǎn)時(shí),太陽直射在(23.5°N,23.5°S),
北半球的季節(jié)是 .
(3)地球上南北半球的季節(jié) .
(4)圖2為荊門市某學(xué)校的王玲同學(xué)在不同時(shí)間里她的身影長短變化情況示意圖.假如王玲的身高不變,請(qǐng)比較判斷:如果是在同一天,則更接近正午的是圖(填甲或乙);如果是在不同季節(jié)的正午時(shí)刻,則更接近冬至日的是圖(填甲或乙).
【答案】
(1)自西向東;一年
(2)23.5°N;夏季
(3)相反
(4)乙;甲
【解析】讀圖可知,(1)地球繞太陽不停的旋轉(zhuǎn)叫地球的公轉(zhuǎn),地球公轉(zhuǎn)的方向自西向東的,周期是一年.(2)地球公轉(zhuǎn)位置在B點(diǎn)時(shí),為北半球的夏至日,日期為6月22日前后,太陽直射在北回歸線上,即23.5°N緯線上,此時(shí)北半球?yàn)橄募荆?)地球上南北半球的季節(jié)是相反的,當(dāng)北半球?yàn)橄募緯r(shí),南半球?yàn)槎荆?)由于地球自轉(zhuǎn),在同一天,正午的太陽高度角最大,影子應(yīng)最短,從圖中看出乙圖影子短,應(yīng)在正午;由于地球公轉(zhuǎn),在不同季節(jié)的正午時(shí)刻,冬至日太陽直射了南回歸線,北半球太陽高度角最小,影子最長,從圖中看出甲圖影子長,應(yīng)更接近冬至日.所以答案是:(1)自西向東;一年;(2)23.5°N;夏季;(3)相反;(4)乙;甲.
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