首页
登录
职称英语
[originaltext] It takes 8.3 minutes for the sun’s light travelling at 186,28
[originaltext] It takes 8.3 minutes for the sun’s light travelling at 186,28
游客
2024-03-08
7
管理
问题
It takes 8.3 minutes for the sun’s light travelling at 186,282 miles a second to reach the earth. At that speed, light could travel around the earth seven times in one second. The sun looks yellow-gold, because we’re viewing it through the earth’s atmosphere. Judging from its surface temperature, the sun’s color is probably closer to white. The temperature of the sun at its core is around 73 million degrees F. It takes 50 years for this energy to reach the sun’s surface, where we can see it as light. The English astronomer James Jeans once figured that if you placed a piece of the sun’s core, the size of the head of a pin, on earth, its heat would kill a person 94 miles away. The temperature of the sun’s photosphere, the part that sends us light, is about 10,000 degrees F. The sun contains 99.9% of the matter in our solar system. The sun produces more energy in one second than human beings have produced in all of our history. In less than a week, the sun sends out more energy than we could make by burning all the natural gas, oil, coal and wood on the earth. The earth receives one two-billionth of the sun’s power. With every passing day, the sun is losing energy, but it still has about 5 billion years of life left.
Questions 9 to 11 are based on the passage you have just heard.
9.According to the speaker, what is the travelling speed of the sun’s light?
10. According to the speaker, what is probably the sun’s actual color?
11.What is happening each day to the sun?
选项
A、It is losing energy.
B、It is rotating once every 26.8 days.
C、It is moving further away from die earth.
D、It is travelling faster.
答案
A
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3516459.html
相关试题推荐
Forthispart,youareallowed30minutestowriteashortessayentitledFollow
Forthispart,youareallowed30minutestowriteashortessayentitledMyVie
Forthispart,youareallowed30minutestowriteashortessayononlinepa
Concentration—thePremiseofSuccessForthispart,youareallowed30minutest
Forthispart,youareallowed30minutestowriteanessaybasedonthepic
Forthispart,youareallowed30minutestowriteanessayonhappiness.Youre
Forthispart,youareallowed30minutestowritealetter.Supposeyouare
Forthispart,youareallowed30minutestowriteanessayonobstaclesby
Forthispart,youareallowed30minutestowriteashortessayentitledTreasu
Forthispart,youareallowed30minutestowriteashortessayentitledTimeS
随机试题
Chancingtotakeamemorablewalkbymoonlightsomeyearsago,Iresolvedto
WelcomeSpeech1.Roomallocation-Roomnumber
打开消防应急广播机箱背面的“电源”开关,如无故障等信号,则处于正常监视状态。(
A. B. C. D.
乳房囊性增生病可行A.药物治疗 B.乳房切开引流术 C.乳腺肿块切除术 D
一个投资组合风险小于市场平均风险,则它的β值可能为( )。A.0.8 B.1
必须按照国务院卫生行政部门的有关规定,严格执行消毒隔离制度,防止发生院内感染和医
根据上图,下列关于全国重点城市平均地价增长率情况的表述,正确的一项是:()
下列说法错误的是()。A.在合同约定的保证期间和前款规定的保证期间,债权人未对
(2016年真题)关于施工合同索赔的说法,正确的是()。A.承包人可以直接向业
最新回复
(
0
)