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
49
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/2900197.html
相关试题推荐
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Every
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Every
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvania
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvania
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvania
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]W:OK,I’vegotallthepaperworkhereforyourapplication.Ever
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvani
[originaltext]M:ItsaysherethatyougraduatedfromUniversityofPennsylvani
随机试题
InWesternculture,anengagementbeginswith"yes"toasimplequestion:"W
Whowillbeimposedsanctionaccordingtotheagreementoftheconference?[orig
[originaltext]M:Haveyounoticedthenewdustbindownstairs,attheentranceo
Completethesummarybelow.ChooseNOMORETHANTWOWORDSfromthePassagefore
下列单层外窗中最贵的一种是()。A.空腹钢窗 B.实腹钢窗 C.铝合金推
苦杏仁的炮制方法为A.煮法 B.醋炙 C.制霜 D.燀制 E.水飞
共用题干 老李手中没有任何外汇,只有人民币,他通过证券公司开立了上海和深圳证券
A.属解热镇痛药 B.属抗抑郁药 C.属脱水药 D.属抗过敏药 E.属止
中国甲公司与某国乙司发生买卖合同纠纷,在中国仲裁过程中,乙公司申请财产保全,即
某中学欲开展学校健康促进工作,其实施内容中属于"学校健康政策"的是A.请家长或学
最新回复
(
0
)