【題目】讀北半球某區(qū)域冬季某月地面天氣形勢圖單位:百帕,完成下列問題

1此時,A地受 氣壓控制,其天氣狀況是 。

2圖中a、b、c、d中風(fēng)向表示正確的是 地;關(guān)于甲乙兩地?cái)⑹稣_的是

A甲處風(fēng)力大于乙處 B甲處氣壓高于乙處

C乙處目前受冷氣團(tuán)控制 D未來幾天乙地會經(jīng)歷一次升溫過程

3近日,將有 地過境。地在鋒面過境后,天氣變化情況是 、 。

4暖空氣在鋒面上常有大規(guī)模的 上升、下降運(yùn)動。在②④兩地的暖空氣中,被迫抬升的是 地。

【答案】1低 陰雨天氣

2c A

3暖鋒 氣溫下降、 氣壓上升、 天氣轉(zhuǎn)晴

4上升

【解析】

試題分析:1從圖中看A地氣壓較四周低,受低氣壓控制,低壓控制下多陰雨天氣。

2風(fēng)向應(yīng)從高壓指向低壓,a、d指向高壓錯;北半球風(fēng)向向右偏,b風(fēng)向較水平氣壓梯度力向左偏,錯,c風(fēng)向正確。甲地等壓線較乙處密,風(fēng)力大于乙處,A正確;甲處氣壓值是1005~1010之間,乙氣壓是1010~1015之間,乙的氣壓高于甲,B錯;乙處位于暖鋒鋒后,冷鋒鋒前,暖氣團(tuán)控制,C正確;未來幾天冷鋒到達(dá)乙地,乙會經(jīng)歷一次冷鋒過境過程,大風(fēng)、降溫、雨雪天氣,D錯。

3地位于暖鋒鋒前,近日將有暖鋒從地過境。位于冷鋒鋒前,將經(jīng)有冷鋒過境,冷鋒過境后,氣溫下降,氣壓上升、天氣轉(zhuǎn)晴。

4暖空氣在鋒面上常有大規(guī)模的上升運(yùn)動,是暖鋒,暖氣團(tuán)主動爬升,是冷鋒,冷氣團(tuán)主動向暖氣團(tuán)移動,暖氣團(tuán)被迫抬升。

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