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
45
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.
【L3】
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
imbalance
解析
转载请注明原文地址:https://kaotiyun.com/show/WTrO777K
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
PresidentGeorgeW.Bush布什总统GeorgeW.Bushisthe43rdPresidentoftheUnitedStates.Hew
Eighty-twopeoplewerereported______intheplanecrash.
TheUnitedStatescountsitspopulationeverytenyears,andeachcensusrevealsthattheracialandethnicmixischangingdram
TheUnitedStatescountsitspopulationeverytenyears,andeachcensusrevealsthattheracialandethnicmixischangingdram
With2005fastbecoming"theyearofthenaturaldisaster",itistimetoreflectonhowengineering,scienceandtechnologyca
InanuncriticalAugust11,1997,WorldNewsTonightreporton"diamagnetictherapy,"aphysicaltherapistexplainedthat"magn
Acommonquestionthatpeopleaskastorywriteriswhetherornothehasexperiencedwhathehaswrittenabout.
Suchalink,carryingpower,wouldbeanalternativetoconventionalpowerlines,withfarbetter______integrationintothenatu
WhatisthebookNativeSonabout?
WhatisthebookNativeSonabout?
随机试题
《水夫谣》一诗出自于
患者,女性,38岁。因嗜睡、意识模糊3小时并两次抽搐后昏迷来院急诊。5天前因受凉后出现发热,咳嗽,咯黄色黏稠痰,胃纳差,口干。每天饮大量甜饮料,出现多饮、多尿等症状并日渐加剧。查体:T38.8℃,P108次/分,R20次/分,BP130/80mmHg;肥胖
中医古籍中最早出现的方剂分类方法是
一患者单侧颏孔区骨折,前骨折段向下,后方移位,并稍偏向患侧是由于
分析企业债务清偿能力时,可列入速动资产的有()。
下列各项中,应在收回委托加工货物后征收消费税的是()。
内部招聘的来源有()。
以下项目中,属于企业其他货币资金的是()。
谈一件别人误解你的事情。并谈谈你是怎样处理的?
一、注意事项1.申论考试是对考生阅读能力、综合分析能力、提出和解决问题能力以及文字表达能力的测试。2.仔细阅读给定资料,按照后面提出的“作答要求”作答。二、给定资料1.新浪微博上一个名叫“郭美美Baby”的网友颇受关注,因为这
最新回复
(
0
)