题目内容

【题目】以下关于地球的说法,正确的是

A.地震发生时每个人应立即向屋外冲

B.火山、地震很少分布在板块交界地带

C.火山是因为板块挤压变形隆起形成的

D.地球的岩石圈好像一整块拼好的“七巧板”,说明全球由七大板块组成

【答案】D

【解析】

地质学家经过长期研究,提出了板块构造学说。板块构造学说认为,地球岩石圈是由板块拼合而成的。全球主要有六大板块,其中太平洋板块几乎全部是海洋,其余板块既包括大陆,又包括海洋。海洋与陆地的相对位置是不断变化的。

当地震来临时,要保持清醒、冷静的头脑,及时将身边的书包或柔软的物品顶在头上,有时间时快速离开教室,跑到空旷地方去,不能每个人应立即向屋外冲。故A错误;一般来说,板块的内部比较稳定,板块与板块交界的地带,地壳比较活跃,容易发生火山、地震。故B正确; 当炽热的岩浆沿着地壳裂口冲出地表,就叫做火山喷发。火山是由火山口喷发的物质堆积而成的高地。故C错误;地壳是由太平洋板块、欧亚板块、非洲板块、北美洲板块、印度洋板块、南极板块、南美洲板块等七大板块及若干小板块组成。故D正确。故选D.

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