( ) 4. A light year is a measure of A. time B. speed C. length D. height 相关知识点: 试题来源: 解析 答案4.C 解析 4.a light year光年,光年是长度单位,光年一般被用于计算 恒星间的距离。 A.time时间 B.speed速度 C.length长度 D.height高度 选C 。 句意:光年是长度的度量单位。
A light year is a measure of ___. A. time B. distance C. speed D. mass 相关知识点: 试题来源: 解析 B。本题考查光年的概念。光年是长度单位,是计量天体间距离的单位,所以答案是 B。选项 A“time”是时间;选项 C“speed”是速度;选项 D“mass”是质量。反馈...
how far can it travel in a year? 一光年大约等于5.8万亿英里或者说9.5万亿千米 One light year equals about 5.8 trillion miles or 9.5 trillion kilometers. 由于宇宙实在太大了 Since space is incredibly huge, 使用光年作为单位...
The word "year," is normally a unit of time, but light-years measure distance. M. Aurelius/Shutterstock A light-year is a way of measuring astronomical distances in space. That doesn't make much sense because "light-year" contains the word "year," which is normally a unit of time. ...
NASA demonstrate in 1 minute 46 seconds just how far a light year is. Pretty far… You may also like: Listen&Learn: The History of Airplanes How Many ‘scales’ Can You See Here? Listen&Learn: The History of Santa Claus Posted by Josef Essberger April 2019 ...
解析 答案:一光年是长度的一种测量方法。核心短语/词汇: a light year:一光年 measure:测量方法 解析:根据“a light year:一光年”和“measure:测量方法”,结合语境可知答案。结果一 题目 【题目】A light year is a measure of length这句话什么意思啊? 答案 【解析】答案:一光年是长度的一种测量方法。核心...
Alph a Centauri is so far away.Questions 91 —95: Please complete the summary of the passage above with not more than three words for each blank.请完成上面篇章的内容摘要。 每空不超过三个单词。 A light year is the distance that light travels 91.. Light travels at 300,000 kilometres per...
A light-year is a measure of the distance it takes light to travel through interstellar space over the course of a year.When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A Hubble Space Telescope image of the Andromeda galaxy, the Mil...
A light year is a basic unit astronomers use to measure the vast distances in space. To give you a great example of how far a light year actually is, it will takeVoyager 1(NASA’s longest-lived spacecraft) over17,000 yearsto reach 1 light year in distance traveling at a speed of 61...
A light-year is a measurement of distance and nottime(as the name might imply). A light-year is the distance a beam of light travels in a singleEarthyear, which equates to approximately 6 trillion miles (9.7 trillion kilometers).