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【题目】

【1】关于太阳活动对地球的影响,叙述正确的是( )

A.对磁场的影响是使无线电短波通讯中断

B.对电离层破坏导致磁针剧烈颤动

C.对降水的影响是正相关

D.太阳活动使地球上的很多现象具有11年的周期

【2】下列现象与太阳辐射关的是(

A.煤、石油、天然气等矿物燃料的形成 B. 利用地热能发电

C.地球上生物的生长 D. 地球上的水循环

【答案】

【1】D

【2】B

【解析】

试题分析:

【1】太阳活动是太阳大气的不稳定性所导致的一些明显现象,对地球磁场造成扰动,引起磁暴现象,A错。引起电离层扰动,导致无线电短波通讯中断,B错。太阳活动中的黑子活动与地球的气候有一定的相关性,可能是正相关,也可能是负相关,也可能二者都有,C错。太阳活动的周期是11年,地球上与太阳活动有关的很多现象都具有11年的周期,D对

【2】地热能来源于地球内部,是地球内部放射性元素衰变产生的热能,与太阳辐射无关,B正确。作为工业主要能源的煤、石油等矿物然料,是地质历史时期生物固定以后积累下来的太阳能;太阳辐射能维持着地表温度,是地球上的水、大气运动和生命活动的主要动力。故答案选B项。

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