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。
Light travels very fast. It can travel 300,000 kilometers per second. How fast does light travel? A. 300 kilometers per second. B. 3,000 kilometers per second. C. 300,000 kilometers per second. 相关知识点: 试题来源: 解析 C。解析:光传播速度非常快,每秒能传播 30 万公里,C 选项正确...
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...
light to travel out of the hole, to the adjacent mirror, and back through the gap. Another French physicist, Leon Foucault, used a rotating mirror rather than a wheel to perform essentially the same experiment. The two independent methods each came within about 1,000 miles per second (1,...
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 is a form of energy, and it is the fastest thing in the universe, traveling at 186,000 miles per second. For many years, scientists couldn't agree on whether it traveled in waves or in small particles. They continued to study its behavior and decided that it probably travels in ...
Light travels at 186,000 miles per second! View Video Only Save Timeline Video Quiz Course 93K views Light Is Energy We all know that light is an important part of our lives. The light from the sun brightens up our days. Light from electricity helps us see in the dark, watch...
___ does it take for light to travel from the Sun to the Earth? A. How long B. How far C. How often D. How soon 相关知识点: 试题来源: 解析 A。How long 询问时间长短,光从太阳到地球所需的时间要用 How long 来询问。反馈 收藏 ...
Lighttravels at exactly 299,792,458 meters per second in a vacuum (about 300,000 kilometers per second or just over 1 billion kilometers per hour). As a comparison, sound waves travel at a paltry 343.14 meters per second (about 1,235 kilometers per hour), almost a million times slower...