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
2023-08-05
88
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、Yellow.
B、Yellow-gold.
C、White.
D、Colorless.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2900198.html
相关试题推荐
[originaltext](23)WiththeInternetrevolutionusheringinnewmodesofco
[originaltext]Hereisaquestionforyou.Thecustomerisalwaysright.Rig
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreat
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreat
[originaltext]MedicalexpertssaymostAmericansdonotgetenoughsleep.T
[originaltext]TheWorldHealthOrganizationsays57nationsinSouthernAfr
[originaltext]TheWorldHealthOrganizationsays57nationsinSouthernAfr
[originaltext]TheWorldHealthOrganizationsays57nationsinSouthernAfr
[originaltext]W:WhatdoyouthinkofTV?Ithinkitisafalsegod,adang
[originaltext]W:WhatdoyouthinkofTV?Ithinkitisafalsegod,adang
随机试题
Isincerely______himtomakegreatprogresswithhisnewworkinashorttime.
AmazinglyfortheBritish,wholovequeues,thereisnoformalline-up--t
Anewstudyhasdrawnableakpictureofculturalinclusivenessreflectedin
[originaltext]M:Say,Lisa,whatshowareyouwatching?W:AnoldJapanesefilm
编辑加工整理时要尊重作者,下列做法中不符合这个原则的是( )。A.把公元年份的
图示单层钢筋混凝土厂房平面布置图,下列做法错误的是( )。 A.采用等距布置
施工质量事故处理的依据有(??)。A.有关质量事故的观测记录、照片等
甲公司与乙合伙企业签订了一份二手车买卖合同,合同约定由甲公司于10月底将一辆已行
负债是指由企业过去的交易或者事项形成的,预期会导致经济利益流出企业的将来义务。(
(2020年真题)甲公司是国际知名汽油车制造商,该公司2020年预计随着环保理念
最新回复
(
0
)