学年度浙教版科学八年级上册第1节 地球上的水练习题第四十四篇.docx

学年度浙教版科学八年级上册第1节 地球上的水练习题第四十四篇.docx

《学年度浙教版科学八年级上册第1节 地球上的水练习题第四十四篇.docx》由会员分享，可在线阅读，更多相关《学年度浙教版科学八年级上册第1节 地球上的水练习题第四十四篇.docx（28页珍藏版）》请在冰点文库上搜索。

学年度浙教版科学八年级上册第1节地球上的水练习题第四十四篇

2019-2020学年度浙教版科学八年级上册第1节地球上的水练习题第四十四篇

第1题【单选题】

地球上的水以各种不同的形式分布在海洋、陆地、大气和生物体中，其中分布占比最多的是（）

A、海洋水

B、冰川水

C、湖泊淡水

D、大气水

【答案】：

【解析】：

第2题【单选题】

水是生命之源，既普通又宝贵．下列对水的“多”与“少”的描述错误的是（）

A、生活中接触的纯水多，水溶液少

B、我国水资源总量多，人均水量少

C、“南水北调”工程说明我国南方水的储量多，北方水的储量少

D、地球上水的总量多，淡水少

【答案】：

【解析】：

第3题【单选题】

下列四个地区,水循环比较活跃的是（）

A、长江、黄河发源地区

B、长江中下游地区

C、新疆沙漠地区

D、南极冰川地区

【答案】：

【解析】：

第4题【单选题】

2018年5月，台州南部湾区引水工程开工，以级解台州南部地区的用水紧张状况。

该工程通过管道，将台州北部水资源向南部输送，该工程改变的水循环环节是（）

A、降水

B、地表径流

C、海水蒸发

D、水汽输送

【答案】：

【解析】：

第5题【单选题】

世界陆地主要集中在（）

A、北半球、东半球

B、北半球、西半球

C、南半球、东半球

D、南半球、西半球

【答案】：

【解析】：

第6题【单选题】

2014年12月12日，历时11年建设的南水北调中线工程正式通水，通水后，每年可向北方疏送95亿立方米的水量，相当于条黄河，读图，完成小题．

该工程（）

A、从根本上解决了受水地区的缺水问题

B、缓解了我国水资源空间分布不均的问题

C、缓和了华北地区的洪涝灾害

D、消除了京津地区水污染问题

【答案】：

【解析】：

第7题【单选题】

地球是人类生存的家园。

下列有关的叙述错误的是（）

A、全球由六大板块组成

B、火山和地震都是地壳变动的表现

C、地球由外向内分为地壳、地幔、地核三层

D、地球上的水是循环不息的，不必担心水资短缺

【答案】：

【解析】：

第8题【单选题】

地球是人类共同的家园，下列关于地球的叙述中，不正确的是（）

A、地球由外向内可分为地壳、地幔、地核三层

B、地球是距离太阳最近的一颗行星

C、地球上的大部分淡水曾是海洋水的一部分

D、地球上的地震主要发生在板块交界的地方

【答案】：

【解析】：

第9题【单选题】

下列四个地区，水循环最为活跃的是（）

A、长江、黄河发源地区

B、长江中下游地区

C、新疆沙漠地区

D、南极冰川地区

【答案】：

【解析】：

第10题【单选题】

南水北调工程，计划把长江流域的水调到（）

A、华北和东北

B、华北和西北

C、东北和西北

D、西北和西南

【答案】：

【解析】：

第11题【填空题】

如图是大自然中水循环的示意图。

江河湖海以及陆地表层中的水不断______变成水蒸气，这一过程要吸热。

当含有很多水蒸气的空气升人高空时，水蒸气的温度降低变成小水滴或小冰晶，这就形成了云，云是水蒸气液化或______形成的。

在一定条件下，云中的小水滴和小冰晶越来越大，就会落，在下落过程中，小冰晶又变成了小水滴，与原来的水滴一起落到地面，就形成了雨，小冰晶的熔化过程需______热。

【答案】：

【解析】：

第12题【填空题】

地球上的水中咸水占______，淡水占______。

它们主要存在于______、陆地、______和生物体内。

目前，人们可利用的淡水资源只占全球淡水资源的______，世界面临着严重的淡水危机。

【答案】：

【解析】：

第13题【填空题】

如图中，甲为桃树，乙为桃树叶片的叶肉细胞结构示意图，图中A、B、C为发生在植物体内的某些生理过程．请回答：

“去年今日此门中，人面桃花相映红．”桃花不仅有观赏价值，也是重要的生殖器官．在桃花中，精子与卵细胞结合的地方是在子房的______中．

植物的生长、细胞的分裂等生命活动所需的能量主要来自过程A．过程是发生在图乙中的______（填图中的番号）中．

过程C需要的水和无机盐是通过根、茎、叶内的______运输到植物的各个部位．

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