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
55
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、186,282 miles per second.
B、8.3 million miles per second.
C、10,000 miles per microsecond.
D、1 billion miles per second.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3516457.html
相关试题推荐
Forthispart,youareallowed30minutestowriteashortessayentitledFollow
Forthispart,youareallowed30minutestowriteashortessayentitledTh
BeingEnthusiasticinLifeForthispart,youareallowed30minutestowr
Forthispart,youareallowed30minutestowriteashortessayentitledMyVie
Forthispart,youareallowed30minutestowriteashortessayononlinepa
Forthispart,youareallowed30minutestowriteanessaybasedonthepic
Directions;Forthispart,youareallowed30minutestowriteashortessay
Forthispart,youareallowed30minutestowriteanessaycommentingonthe
Forthispart,youareallowed30minutestowritealetter.Supposeyouare
Directions:Forthispart,youareallowed30minutestowriteashortessay
随机试题
From:ChristinavanDijkTo:HeinzNiebaumSubject:MeetingnextweekDearHeinz
TheDepartmentofHomelandSecurityhasfilledthenation’stopcyber-securit
Non-VerbalCommunicationsAcrossCulturesNon-verbalcommunicationscanaffirm,
关于风机盘管的供冷性能试验工况,建议空气状态参数应是下列哪一项?A.干球温度25
当一人进行心肺复苏时,呼吸与心脏按压的合适比例为()A.1:10 B.
慢性脓胸合并一肺叶内严重病变时可选用手术方式以A.改进引流手术 B.胸膜纤
A.头微痛,恶寒微发热,口唇干燥,干咳少痰,舌白而干,脉浮 B.高热,烦躁,口
A.阿司匹林 B.鱼精蛋白 C.尿激酶 D.维生素B E.维生素K直接激
甲公司为适应市场需求,2021年拟购入一条生产线,有关资料如下: (1)该条
根据《建设项目环境影响报告书(表)编制监督管理办法》,关于编制单位和编制人员信息
最新回复
(
0
)