首页
登录
职称英语
[originaltext] The winds of a tornado are the most violent and destructive o
[originaltext] The winds of a tornado are the most violent and destructive o
游客
2023-08-14
18
管理
问题
The winds of a tornado are the most violent and destructive ones on Earth. Any of you who have seen one knows very well how frightening and powerful they are. What’s interesting about them is that scientists don’t actually know exactly why tornadoes occur.
We do know, however, what happens when tornadoes are formed. As you remember, a front occurs when cool, dry air from the north meets warm, humid air coming from the south. Where these air masses meet, a narrow zone of storm clouds develops, and thunderstorms, and sometimes tornadoes, occur.
How is this violent weather produced? Well, a mass of warm, humid air rises very rapidly. As it rises, more warm air rushes in to replace it. This inrushing air also rises, and in some cases, especially when there is extreme thermal instability, begins to rotate. When this happens, the rotating air forms a tornado.
Even if you’ve seen tornadoes only in movies, you know that they can destroy buildings in seconds. This is possible because when a tornado passes over a house, it sucks up air from around the house and so the air pressure outside the house drops rapidly. Inside, pressure remains the same. So, air pressure inside is greater than air pressure outside. The result is that the building explodes outward. Next, we’ll talk a little bit about how new technological developments are being used to try to predict tornadoes.
9 What does the speaker say about the scientists?
10 In what way does a narrow zone of storm clouds develop?
11 What will happen to a building when air pressure inside is greater than outside?
选项
A、Where dry and humid air masses meet.
B、Where the air becomes warm and humid.
C、When thunderstorms or tornadoes occur.
D、When the air rises very rapidly.
答案
A
解析
原文提及“当来自北方寒冷干燥的空气与来自南方温暖湿润的空气相遇,锋面形成。当这些气团相遇,一个狭窄的暴风云区也形成。”故A正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2925887.html
相关试题推荐
[originaltext]Let’stalkaboutasocialconditionthatmanypeoplemightbe
[originaltext]Let’stalkaboutasocialconditionthatmanypeoplemightbe
[originaltext]Whatisthedifferencebetweenlovingdisciplineandchildab
[originaltext]Well,mytopictodayisthedoctor-patientrelationship.All
[originaltext]Well,mytopictodayisthedoctor-patientrelationship.All
[originaltext]Manystudieshavebeenmaderecentlyabouthandpreferencein
[originaltext]Manystudieshavebeenmaderecentlyabouthandpreferencein
[originaltext]M:Hi,Sue.IwaswonderingifyoucouldfillmeinonMonday’sc
[originaltext]M:Hi,Sue.IwaswonderingifyoucouldfillmeinonMonday’sc
[originaltext]M:Hi,Sue.IwaswonderingifyoucouldfillmeinonMonday’sc
随机试题
Writtenapplicationshouldbesenttousincase______somethingwrongwiththe
Fearsof"madcow"diseasespread【C1】______theglobelastweek【C2】______So
Mostpeopleoftendreamatnight.Whentheywakeinthemorningtheysayto
在气体燃料燃烧过程中,若化学反应时间大大超过混合时间,称为()。A.动力燃烧
产于甘肃的道地药材是A.人参B.附子C.牛膝D.当归E.生地黄
2011年某省接待过夜游客总量再次实现突破,达到3001.34万人次,同比增长
2020年1-10月,我国规模以上互联网和相关服务企业(简称互联网企业)完成业务
无实物产出的咨询服务,世界银行《咨询服务采购指南》规定了世界银行贷款项目咨询服务
一般资料:求助者,女性,16岁,高一学生,住校。因与老师发生激烈冲突内心极其痛苫
下列关于室外燃气管道的选用,叙述正确的是()。A.燃气高压、中压管道通常
最新回复
(
0
)