首页
登录
职称英语
Why do the changes in climate occur? [br] [originaltext] Today I want to tal
Why do the changes in climate occur? [br] [originaltext] Today I want to tal
游客
2023-11-12
37
管理
问题
Why do the changes in climate occur? [br]
Today I want to talk about the Earth’s last major climatic shift, at the end of the last ice age. But first, let’s back up a moment and review what we know about climatic change in general. We defined "climate" as consistent patterns of weather over significant periods of time.
In general, changes in climate occur when the energy balance of the Earth is disturbed. Solar energy enters the Earth’s atmosphere as light and is radiated by the Earth’s surface as heat. Land, water, and ice each affect this energy exchange differently. The system is so complex that, to date, our best computer models are only crude approximations and are not sophisticated enough toTEST hypotheses about the causes of climatic change. Of course, that doesn’t keep us from speculating. For instance, volcanic activity is one mechanism that might affect climatic change. (12) When large volcanoes erupt, they disperse tons of particles into the upper atmosphere, where the particles then reflect light. Since less light is entering the system of energy exchange, the result would be a cooling of the Earth’s surface.
Of course, this is just one possible mechanism of global climate change. In all probability, (13) a complete explanation would involve several different mechanisms operating at the same time.
选项
A、a rise in temperature of the Earth’s surface
B、a cooling of the Earth’s surface
C、complete darkness on Earth’s surface
D、a lack of water on Earth’s surface
答案
B
解析
细节题。原文中指出火山爆发会往高层大气中喷射成吨的颗粒,它们反射阳光,使地表接收不到足够的热量,因此会造成地球表面的冷却,因此正确答案为B。
转载请注明原文地址:https://tihaiku.com/zcyy/3181644.html
相关试题推荐
Thenewlyelectedpresidentislikelytomakemajorchangesin______.A、personal
NajibullahZaziwasarrestedbecause[br][originaltext][28D]AnAfghanim
Whereshouldthefoodaidbedeliveredto?[br][originaltext]AUnitedNati
Whereshouldthefoodaidbedeliveredto?[originaltext]AUnitedNationsre
JohnWilliams’houseismadeof[br][originaltext]Morethan40yearsago,
JohnWilliams’houseismadeof[br][originaltext]Morethan40yearsago,
JohnWilliams’houseismadeof[br][originaltext]Morethan40yearsago,
JohnWilliams’houseismadeof[originaltext]Morethan40yearsago,JohnW
Thespeakerwantsustoknowthatachild[br][originaltext][18B]Playis
Whatistheman’sproblem?[br][originaltext]M:Excuseme,butisthiswhereI
随机试题
Whetheryoukeepallthereceiptsinashoeboxoruseonlinebanking,youshoul
SmithsoldA(mostof)hisB(belongings).HehashardlyC(nothing)leftD(in)the
BadInvestmentTakeitfromabusinessman:TheWar
Itishightimethatthisargument(put)______anendto.wereput本题测试的是虚拟语气的用法。
Thesestatisticsonthethirdpageis______oftheeconomicgrowthofourcount
高等教育的社会功能
新课程改革的具体目标规定要改变课程过于集中的状况,实行__________、地方
外部欺诈事件是指()。A.故意骗取、盗用财产或违反监管规章、法律或公司政策导
违反从业人员职业操守的人员,()。 A.可能受到公众谴责,但尚无法进行实质性
动作技能形成过程的第三阶段是( )A.联结阶段 B.自动化阶段 C.认知阶
最新回复
(
0
)