题目内容

【题目】据报道,201167太阳黑子活动剧烈,引发的太阳风暴在68袭击地球,而此次黑子大爆发已经引发了不同程度的影响,北美和欧洲部分地区的卫星通信遭到干扰。据此回答下列问题。

【1】用一般收音机收听短波广播时,声音常常忽大忽小,甚至中断,主要是因为

A太阳大气发射的电磁波扰乱了地球大气的电离层

B太阳大气抛出的带电粒子流扰乱了地球磁场

C短波在大气中传播时,被空气分子吸收

D短波到达电离层后,被全部反射回到地面

【2】日全食时,能看见的太阳大气层及相应的太阳活动是

A色球、耀斑 B日冕、耀斑

C色球、太阳风 D光球、太阳风

【答案】

【1】A

【2】A

【解析】

试题分析:

【1】用一收音机收听短波广播时,声音常常忽大忽小甚至中断,主要是因为太阳大气发射的电磁波扰乱了地球上空的大气层。所以本题选择A选项。

【2】日全食时,能看见的太阳大气层是色球层,其相应的太阳活动是耀斑、日珥。

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