【題目】下圖是某地等值線分布圖,讀圖回答下列問題。

(1)C、D間的相對高度是_____,C、D兩地的溫差是 ______。

(2)AB間的水平距離約是 ____________ 千米。

(3)若站在C點(diǎn),能否直接看到D點(diǎn)?____因?yàn)?__________________ 。

(4)圖示范圍內(nèi)是否可能有永久性冰川?_____ 因?yàn)?______________ 。

【答案】

(1)300 1.8°C共2分

(2)4千米 1分

(3)否1分 C D連線通過一道山脊,阻擋了視線2分

(4)否1分 根據(jù)推算,最高點(diǎn)B氣溫在0以上2分

【解析】

試題分析:

(1)海拔每升高100米,氣溫下降0.6°C。氣溫12°C的等值線海拔高度是300米,可以計(jì)算出D點(diǎn)海拔是900米。C點(diǎn)海拔是1200米,C、D間的相對高度是300米。同理,計(jì)算出C點(diǎn)的溫度是6.6°C,C、D兩地的溫差是1.8°C。

(2)根據(jù)圖上比例尺,AB間的圖上距離約4厘米,所以水平距離約是4千米。

(3)讀圖,C D之間有一道山脊,阻擋了視線,若站在C點(diǎn),不能直接看到D點(diǎn)。

(4)根據(jù)推算,圖中海拔最高點(diǎn)B的氣溫在0以上,不可能有永久冰川存在。

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