



下载本文档
版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
1、姓名:_ 班级:_ 学号:_-密-封 -线- 理工类单选题考试卷_模拟考试题考试时间:120分钟 考试总分:100分题号一二三四五总分分数遵守考场纪律,维护知识尊严,杜绝违纪行为,确保考试结果公正。1、paragraph 2 _. ( )a.the definition and the description of the ionsb.the definition and the description of the stratospherec.the suns raysd.recent studies of the upper atmosphere versus past studiese.
2、the definition and the description of the tropospheref.the composition of the atmosphere2、paragraph 3. _.( )a.the definition and the description of the ionsb.the definition and the description of the stratospherec.the suns raysd.recent studies of the upper atmosphere versus past studiese.the definit
3、ion and the description of the tropospheref.the composition of the atmosphere3、paragraph 4. _. ( )a.the definition and the description ol4、at the top of jungfrau, which towers 12,000 feet above the town of interlaken in switzerland, the temperature is usually _.( )a.contains a layer of ozone gases.b
4、.about 42 degrees colder than on the ground.c.21% oxygen by weight.d.less than 1% of xenon by volumee.about 75 degrees colder than in interlakenf.is warmed by the earths heat.5、life as we know exists on the earth because the atmosphere _. ( )a.contains a layer of ozone gases.b.about 42 degrees colde
5、r than on the ground.c.21% oxygen by weight.d.less than 1% of xenon by volumee.about 75 degrees colder than in interlakenf.is warmed by the earths heat.6、the atmosphere consists of _.( )a.contains a layer of ozone gases.b.about 42 degrees colder than on the ground.c.21% oxygen by weight.d.less than
6、1% of xenon by volumee.about 75 degrees colder than in interlakenf.is warmed by the earths heat.7、the troposphere is the warmest part of the atmosphere because it _. ( )a.contains a layer of ozone gases.b.about 42 degrees colder than on the ground.c.21% oxygen by weight.d.less than 1% of xenon by vo
7、lumee.about 75 degrees colder than in interlakenf.is warmed by the earths heat.8、the atmosphere1 the atmosphere is a mixture of several gases. there are about ten chemical elements which remain permanently in gaseous form in the atmosphere under all natural conditions. of these permanent gases, oxyg
8、en makes up about 21 percent and nitrogen about 78 percent. several other gases, such as argon, carbon dioxide, hydrogen, neon, krypton and xenon, comprise the remaining one percent of the volume of the dry air. the amount of water vapor and its variations in amount and distribution is of extraordin
9、ary importance in weather changes. atmospheric gases hold in suspension great quantities of dust, pollen, smoke and other impurities which are always present in considerable, but variable amounts.2 the atmosphere has no definite upper limits but gradually thins until it becomes imperceptible. until
10、recently it was assumed that the air above the first few miles gradually grew thinner and colder at a constant rate. it was also assumed that upper air had little influence on weather changes. recently studies of the upper atmosphere, currently being conducted by earth satellites and missile probing
11、, have shown these assumptions to be incorrect. the atmosphere has three well-defined strata.3 the layer of the air next to the earth, which extends upward for about ten miles, is known as the troposphere. on the whole, it makes up about 75 percent of all the weight of the atmosphere, because most o
12、f the solar radiation is absorbed by the earths surface which warms the air immediately surrounding it. a steady decrease of temperature with the increasing elevation is a mot striking characteristic. the upper layers are colder because of their greater distance from the earths surface and rapid rad
13、iation of heat into space. the temperatures within the troposphere decrease about 3.5 degrees per 1000 feet increase in altitude. within the troposphere, winds and air currents distribute heat and moisture. strong winds, called jet streams are located at the upper levels of the troposphere. these je
14、t streams are both complex and widespread in occurrence. they normally show a wave shaped pattern and move from west to east at velocities of 150 mph, but velocities as 400 mph have been noted. the influences of changing locations and strengths of jet streams upon weather conditions and patterns are
15、 no doubt considerable. current intensive research may eventually reveal their true significance.4 above the troposphere to a height of about 50 miles is a zone called the stratosphere. the stratosphere is separated from the troposphere by a zone of uniform temperatures called the tropopause. within
16、 the lower portions of the stratosphere is a layer of ozone gases which filter out most of the ultraviolet rays from the sun. the ozone layer varies with air pressure. if this zone were not there, the full blast of the suns ultraviolet light would burn our skins, blind our eyes and eventually result
17、 in our destruction. within the stratosphere, the temperature and atmospheric composition are relatively uniform.5 the layer upward of about 50 miles is the most fascinating but the least known of the three strata. it is called the ionosphere because it consists of electrically charges particles called ions, thrown from the sun. the northern lights ( aurora borealis ) originate within this highly charged portion of the atmosphere. its effect upon weather conditions, if any, is as yet unknown.( )a.th
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 城市道路改造工程合同书
- 原料供应合同
- 连锁餐厅与旅行社定点合作合同
- 水产养殖基地租赁合同范本
- 粘土盒美术课件
- 植物考试模拟题与参考答案
- 租赁车位合同简易版
- 工商局标准股份转让合同范本
- 职业生涯教育
- 跨国电子商务交易合作框架协议
- 雾化吸入疗法合理用药专家共识(2024版)解读
- 2024年度产学研合作与科研奖励协议3篇
- 电力工程线路交叉跨越施工主要工序及特殊工序施工方法
- 【MOOC】软件度量及应用-中南大学 中国大学慕课MOOC答案
- 24秋国家开放大学《儿童发展问题的咨询与辅导》周测验参考答案
- 2025届江苏省苏州市重点中学高三第二次模拟考试英语试卷含解析
- JJF(京) 124-2024 智能电表电动自行车充电辨识模组校准规范
- DB65-T 4783-2024 冰川资源遥感调查技术规范
- 护士中级职称竞聘述职课件
- 2024年江苏省徐州市中考一模物理试题(含答案)
- 6古对今 公开课一等奖创新教学设计
评论
0/150
提交评论