【題目】下圖為北半球中緯度某地某日5次觀測(cè)到的近地面氣溫垂直分布示意圖。當(dāng)日天氣晴朗,日出時(shí)間為5時(shí)。讀圖回答下題。

1

A. 5時(shí)、20時(shí)大氣較穩(wěn)定

B. 12時(shí)、15時(shí)出現(xiàn)逆溫現(xiàn)象

C. 大氣熱量直接來(lái)自太陽(yáng)輻射

D. 氣溫日較差自下而上增大

2

A. 日落時(shí)間為17時(shí)

B. 與?谙啾劝讜冚^長(zhǎng)

C. 正午地物影子年內(nèi)最長(zhǎng)

D. 正午太陽(yáng)位于正北方向

【答案】

1A

2B

【解析】試題分析:

1】根據(jù)大氣的主要的直接熱源是地面輻射,C錯(cuò)。一天中最低氣溫在日出前后,最高氣溫在14時(shí)左右。讀圖,結(jié)合圖中曲線,越靠近地面,氣溫日較差越大,D錯(cuò)。圖中12時(shí)、15時(shí)的氣溫垂直變化規(guī)律是遞減,下面熱,上面冷,不易發(fā)生逆溫現(xiàn)象,B錯(cuò)。5時(shí)、20時(shí)氣溫下面冷,上面暖,大氣較穩(wěn)定,A對(duì)。

2】當(dāng)日該地是5時(shí)日出,日出與日落時(shí)間關(guān)于中午12時(shí)對(duì)稱,該地日落時(shí)間應(yīng)該是19時(shí),A錯(cuò)。該地位于北半球,晝長(zhǎng)為14小時(shí),說(shuō)明此時(shí)北半球是夏季。北半球緯度越高,晝?cè)介L(zhǎng),當(dāng)?shù)卦谥芯暥龋?诰暥仁?/span>20°N,在低緯度,所以比?谑械陌讜円L(zhǎng),B對(duì)。夏季,物影較短,C錯(cuò)。正午太陽(yáng)位于正南方向,D錯(cuò)。

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