A. It travels in a curved line B. Light travels in a straight line C. It travels randomly D. Light travels in circles 相关知识点: 试题来源: 解析 B。解析:光沿直线传播是基本的科学知识。A选项“沿曲线传播”错误。C选项“随机传播”不符合光的传播特性。D选项“沿圆形传播”也是错误的。反馈...
How Does Light Move? How Does It Do Both? Light Is a Solo Act Lesson Summary Additional Activities Act Out the Light In this activity, students will get a deep understanding of how light travels as they put themselves in the place of the scientists who studied this phenomenon. Materials...
a他不应该吃什么东西 He should not eat any thing[translate] a摄像机通电后 正在翻译,请等待...[translate] a最后一位是陈三,他是普通职员负责会议记录,今年28岁 正在翻译,请等待...[translate] aRisky Roadside Blowjob 危险的路旁Blowjob[translate] aHow far does light travel 多远点燃旅行[translate]...
How Does Light Travel? - Lesson for Kids - Quiz & Worksheet Video Quiz Course Try it risk-free for 30 days Instructions: Choose an answer and hit 'next'. You will receive your score and answers at the end. question 1 of 3 Scientists have discovered that ___ is the fastest thin...
C. By total internal reflection. D. By scattering. 相关知识点: 试题来源: 解析 C。解析:文中提到 Optical fibers use light waves to transmit information. Light is sent through a thin glass or plastic fiber by total internal reflection.所以光在光纤中是通过全内反射传播的。反馈 收藏 ...
Light travels very fast. How fast does light travel? A. 300,000 kilometers per second B. 200,000 kilometers per second C. 100,000 kilometers per second D. 50,000 kilometers per second 相关知识点: 试题来源: 解析 A。光的速度是每秒 30 万千米。这是基本的科学常识。其他选项速度错误。
题目Light travels very fast. How fast does light travel? A. Very slowly. B. As fast as a car. C. As fast as a plane. D. Very fast. 相关知识点: 试题来源: 解析 D。光传播速度非常快;A 选项非常慢错误;B 选项和汽车一样快错误;C 选项和飞机一样快错误。
Light travels very fast. How fast does light travel? A. 300,000 kilometers per second B. 30,000 kilometers per hour C. 3,000 kilometers per minute D. 300 kilometers per second 相关知识点: 试题来源: 解析 A。光的速度是每秒 30 万公里。选项 B、C、D 速度都不对。科普阅读要记住一些...
Light travels very fast. How fast does light travel? A. 300 kilometers per second B. 3000 kilometers per second C. 300000 kilometers per second D. 30000 kilometers per second 相关知识点: 试题来源: 解析 C。解析:光传播得非常快。光的传播速度是 300000 千米每秒。选项 A、B、D 的速度都...
根据“light …(travel) faster than sound?”可知,这是客观事实,需用一般现在时,主语是“light”光,不可数名词,谓语动词需用单数形式travels。故填travels。 完成句子 [详解]句意:你怎么知道光比声音传播得快?根据“How did you know that light…(travel) faster than sound?”可知,本句考查宾语从句的时态。