首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Lightning Cloud-to-ground lightning bolts are a common phenomenon, about 100 strike Earth’s surface every single second, yet
Lightning Cloud-to-ground lightning bolts are a common phenomenon, about 100 strike Earth’s surface every single second, yet
admin
2018-06-10
91
问题
Lightning
Cloud-to-ground lightning bolts are a common phenomenon, about 100 strike Earth’s surface every single second, yet their power is extraordinary. Each bolt can contain 【L1】______volts of electricity.
This enormous 【L2】______is caused by an 【L3】______between positive and negative charges. During a storm, 【L4】______of rain, ice, or snow increase this imbalance and often negatively charge 【L5】______storm clouds. Objects 【L6】______, like steeples, trees, and the Earth itself, become 【L7】______—creating an imbalance that nature seeks to remedy 【L8】______between the two charges.
A step-like series of 【L9】______, called a stepped leader, works its way incrementally downward 【L10】______a storm cloud toward the Earth. Each of these segments is about 46 meters long. When the lowermost step comes within 46 meters of a positively charged object it is met by a 【L11】______ of positive electricity, called a streamer, which can 【L12】______ through a building, a tree, or even a person. The process forms a channel 【L13】______ electricity is transferred as lightning.
Some types of lightning, including the most common types, never leave the clouds but 【L14】______ between differently charged areas 【L15】______. Other rare forms can be 【L16】______ extreme forest fires, volcanic eruptions, and snowstorms. Ball lightning, a small, charged sphere that floats, glows, and bounces along oblivious to the laws of gravity or physics, still 【L17】______.
Lightning is extremely hot—a flash can 【L18】______around it to temperatures five times hotter than the sun’s 【L19】______. This heat causes surrounding air to rapidly expand and vibrate, which creates the 【L20】______we hear a short time after seeing a lightning flash.
【L15】
Lightning
Cloud-to-ground lightning bolts are a common phenomenon—about 100 strike Earth’s surface every single second—yet their power is extraordinary. Each bolt can contain up to one billion volts of electricity.
This enormous electrical discharge is caused by an imbalance between positive and negative charges. During a storm, colliding particles of rain, ice, or snow increase this imbalance and often negatively charge the lower reaches of storm clouds. Objects on the ground, like steeples, trees, and the Earth itself, become positively charged—creating an imbalance that nature seeks to remedy by passing current between the two charges.
A step-like series of negative charges, called a stepped leader, works its way incrementally downward from the bottom of a storm cloud toward the Earth. Each of these segments is about 46 meters long. When the lowermost step comes within 46 meters of a positively charged object it is met by a climbing surge of positive electricity, called a streamer, which can rise up through a building, a tree, or even a person. The process forms a channel through which electricity is transferred as lightning.
Some types of lightning, including the most common types, never leave the clouds but travel between differently charged areas within or between clouds. Other rare forms can be sparked by extreme forest fires, volcanic eruptions, and snowstorms. Ball lightning, a small, charged sphere that floats, glows, and bounces along oblivious to the laws of gravity or physics, still puzzles scientists.
Lightning is extremely hot—a flash can heat the air around it to temperatures five times hotter than the sun’s surface. This heat causes surrounding air to rapidly expand and vibrate, which creates the pealing thunder we hear a short time after seeing a lightning flash.
选项
答案
within or between clouds
解析
转载请注明原文地址:https://kaotiyun.com/show/2TrO777K
本试题收录于:
CATTI三级口译综合能力题库翻译专业资格(CATTI)分类
0
CATTI三级口译综合能力
翻译专业资格(CATTI)
相关试题推荐
TheBeatles甲壳虫乐队TheEnglishrockmusicgroupTheBeatlesgavethe1960sitscharacteristicmusicalflavorand(1)aprofoun
TheBeatles甲壳虫乐队TheEnglishrockmusicgroupTheBeatlesgavethe1960sitscharacteristicmusicalflavorand(1)aprofoun
TheBeatles甲壳虫乐队TheEnglishrockmusicgroupTheBeatlesgavethe1960sitscharacteristicmusicalflavorand(1)aprofoun
Accordingtocognitivetheoriesofemotion,______angeroccurswhen______individualsbelievethattheyhavebeenharmedandthat_
Havingbeenrobbedofeconomicimportance,thosestatesarenotlikelytocountonverymuchininternationalpoliticalterms.
TheUnitedStatescountsitspopulationeverytenyears,andeachcensusrevealsthattheracialandethnicmixischangingdram
Assumingthattheengineeringproblemscouldbeovercome,theproductionofatimemachinecouldopenupaPandora’sboxofcaus
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetictherapy,"aphysicaltherapistexplainedthat"magn
Suchalink,carryingpower,wouldbeanalternativetoconventionalpowerlines,withfarbetter______integrationintothenatu
InotherpartsofChinawheremajorearthquakeshavebeen______byforeshocks,unusualbehaviorinrats,fish,andsnakeswereob
随机试题
关于QDⅡ基金的申购赎回,投资者甲认为,由于境外交易所的开市时问不同,因此QDⅡ基金的申购赎回的开放时间与一般开放式基金不同;投资者乙认为,QDⅡ基金的申购赎回与一般开放式基金相同,在T+1日对申购和赎回申请进行确认。关于两位投资者的观点,下列判断正确的是
对流传热速率等于系数×推动力,其中推动力是()。
高纤维膳食不适用于
治疗水肿水湿浸渍证的首选方是( )。治疗水肿湿热壅盛证的首选方是( )。
女性骨盆的特点是()。
在讨论“法的起源、法的历史发展”这部分内容时,法学院同学甲、乙、丙各抒己见。甲认为:1.马克思主义法学认为法产生的根本原因是私有制的出现和阶级的形成;2.在古罗马学者西塞罗看来,人定法源于自然法。乙认为:1.法的移植对象只能是本国或本民族以外的法律,法的继
(A)条件(1)充分,但条件(2)不充分。(B)条件(2)充分,但条件(1)不充分。(C)条件(1)和条件(2)单独都不充分,但条件(1)和条件(2)联合起来充分。(D)条件(1)充分,条件(2)也充分。(E)条件(1)和条件(2)单独都不充分,条
设a>1,f(t)=at—at在(一∞,+∞)内的驻点为t(a)。问a为何值时,t(a)最小?并求出最小值。
计算机在接通电源后,系统首先由(41)程序对内部每个设备进行测试。
Theprocessby【C1】______ofwhichhumanbeingsarbitrarilymakecertainthingsstandforotherthingsmaybecalledthesymbolic
最新回复
(
0
)