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
116
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
TheDisasterofTerrorism恐怖主义的灾难byCraigKielburgerNewYorkhasanenergyofitsown,andtha
TheBeatles甲壳虫乐队TheEnglishrockmusicgroupTheBeatlesgavethe1960sitscharacteristicmusicalflavorand(1)aprofoun
MyhusbandisleavingforAmerica
Amniocentesiscanrevealwhetherafetusissufferingfromanyofavarietyofchromosomaldefect.
TheUnitedStatescountsitspopulationeverytenyears,andeachcensusrevealsthattheracialandethnicmixischangingdram
With2005fastbecoming"theyearofthenaturaldisaster",itistimetoreflectonhowengineering,scienceandtechnologyca
Ifyouleftyourbookonthetableovernight,youwouldfindthefollowingmorningthatitwasstillexactlywhereyouhadleft
Thehard,outsurfaceofthetoothiscalledenamel.
Thereisnoalternative,thepresidentmustapprovethebillifCongresspassesit.
随机试题
破产程序中,由于现实生活的复杂性,当事人以及利益相关方经常在法院破产程序中提出一些请求。若在天宝公司破产进程中,出现下列哪种情况人民法院应予支持?()
法律格言说:“法律不能使人人平等,但在法律面前人人是平等的。”关于该法律格言,下列哪一说法是正确的?(2014年卷一第9题)
依《合同法》第270条的规定,建设工程合同应采用( )。
市场失灵指在有些情况下仅仅依靠______并不能实现资源配置最优。
乘坐沿海和长江客轮,持全价票的旅客可随身携带免费行李()千克。
800米跑时消耗的能量主要来自()分解代谢。
中国在探索社会主义建设道路问题上的教训是()。
下列选项中,符合所给图形的变化规律的是:
JOBINFORMATIONJobTitle:BankingEmployer:ConfidentialSource:NYTimesClassifiedAdsLocation:NewYork,NY
软件需求分析的任务不包括(10)。在数据流图中,O(椭圆)代表(11)。(10)
最新回复
(
0
)