题目内容

【题目】我国史籍记载，汉成帝河平元年，“三月乙末，日出黄，有黑气，大如钱，居日中央”。据此回答下列各题。

【1】史籍中描述的“黑气”是指（ ）

A．黑子 B．耀斑 C．太阳风 D．日珥

【2】产生这种现象的能量来自于（ ）

A．氢原子核的裂变反应

B．氦原子核的聚变反应

C．铀等放射性元素的衰变

D．氢原子核的聚变反应

【3】产生这种现象的原因是（ ）

A．“黑气”区域是光球表面的低温区域

B．“黑气”区域是光球表面的高温区域

C．“黑气”区域是色球表面的低温区域 D．黑气”区域是色球表面的高温区域

【4】有关这种现象对地球影响的叙述，正确的是（ ）

A．该现象发生时，抛出的高能带电粒子，可以使地球运动状态发生明显改变

B．该现象产生时，地球上的降水量一定明显增加

C．该现象产生时，人们使用中的手机可能会出现信号中断现象

D． 该现象产生时，地球上的降水量一定明显减少

【答案】

【1】A

【2】D

【3】A

【4】C

【解析】

试题分析：

【1】史籍曾记载“三月己未，日出黄，有黑气大如钱，居日中央”，记载所说的“黑气”是指光球层上的黑子，所以A正确。

【2】太阳能量来源于内部的核聚变反应，即4个氢原子在高温高压的条件下聚变为1个氦原子核而发生质量亏损产生的巨大能量。

【3】“黑气”指的是黑子，是光球层上常出现的暗黑的斑点，“黑气”区域是太阳表面的低温区域，比周围温度低，所以A正确。

【4】太阳对地球的影响，体现在扰动地球上空电离层，影响无线电短波通信，扰动地球磁场，产生“磁暴”现象，作用于两极高空大气，产生极光，影响地球自然环境，产生自然灾害。

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