题目内容

【题目】太阳表面新形成的巨大黑子群和大耀斑，喷射出大量气体、电磁波和带电粒子流，以每小时300万千米以上的速度向宇宙空间喷射，形成太阳风暴。有人形象地把太阳风暴比作“太阳打喷嚏”。据此完成下列问题。

【1】下列说法不正确的是

A．黑子所在区域之外也是耀斑出现频率最高的区域

B．太阳活动频繁时，流星雨和极光现象增多

C．黑子活动增强的年份是耀斑频繁爆发的年份

D．耀斑是太阳色球层中激烈的能量爆发

【2】太阳风暴对地球的影响是

A．引发潮汐现象

B．诱发台风和海啸

C．干扰电离层和有线通信

D．产生磁暴和极光现象

【答案】

【1】B

【2】D

【解析】

试题分析：

【1】黑子位于光球层，耀斑位于外侧色球层，所以当黑子出现频率最高的区域所对应的之外的色球区域也出现耀斑；黑子和耀斑往往是相伴发生的，黑子活动增强的年份是耀斑频繁爆发的年份；耀斑是在太阳的色球中发生的一种局部辐射突然增加的太阳活动，是太阳活动最强的标志；而太阳活动频繁时，极光现象增多，但是流星雨与太阳活动无关，是流星体闯入大气层形成的，故B项正确。

【2】太阳风暴是太阳散发的高能带电离子流，不会引发潮汐现象和诱发台风和海啸，会干扰地球的电离层，但只会影响无线短波通讯，对有线通信没有影响；而会干扰地球的磁场，产生磁暴现象，会和两极地区的高空大气发生碰撞，产生极光，故D项正确。

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