Electromagnetic Radiation
As wavelength of EM radiation increases, frequency _________
随着电磁辐射波长的增加，频率_________
decreases
减少
What is the discovery of Edwin Hubble that supports the Big Bang? (That we learned in class)
支持大爆炸的埃德温哈勃的发现是什么？ （我们在课堂上学到的）
redshift of galaxies
星系红移
As a sound emitting object moves away from you, the wavelength of the soundwaves gets __________
当一个发声物体远离你时，声波的波长变为 __________
longer
更长
the study of celestial objects outside of earth's atmosphere
对地球大气层外天体的研究
Astronomy
天文学
As a light emitting object moves away from you, its lightwaves are shifted towards ___________
当一个发光物体远离你时，它的光波被转移到 ___________
the red end of the EM spectrum.
EM 光谱的红端。
Microwaves have ________ wavelengths than infrared waves
微波的波长比红外线的波长长_____
longer
更长
Two scientists in NJ accidentally discovered this, which proved to be evidence for the Big Bang.
新泽西州的两位科学家偶然发现了这一点，这被证明是宇宙大爆炸的证据。
Cosmic Microwave Background
宇宙微波背景
When an ambulance drives towards you, the frequency of the soundwaves from its siren gets _________
当救护车向您驶来时，其警报器发出的声波频率为 _________
higher
更高
the perceived frequency of a wave as being emitting from an object in motion
从运动物体发出的波的感知频率
the doppler effect
多普勒效应
Who discovered that galaxies are redshifted?
谁发现了星系红移？
Hubble
What color of visible light has the lowest energy?
什么颜色的可见光能量最低？
red
红色的
How long ago did the big bang occur?
大爆炸发生在多久以前？
13.8 billion years ago
138亿年前
The pitch of an object emitting sound is getting lower, that means that it is moving ______________
发出声音的物体的音调越来越低，这意味着它正在移动______________
away from you
离开你
The distance between two crests of a wave is called ___________, while how often a wave crests in a certain period of time is called _____________.
一个波的两个波峰之间的距离称为___________，而一个波峰在一定时间内出现的频率称为_________。
wavelength, frequency
波长、频率
A galaxy's light waves shift from infrared into the visible light range. Is this redshift or blueshift?
星系的光波从红外线转移到可见光范围。 这是红移还是蓝移？
Blueshift
蓝移
If a beam of light shifts from x-ray radiation to UV radiation, the frequency of those waves gets _____________
如果一束光从 X 射线辐射转变为紫外线辐射，则这些波的频率变为 _____________
lower
降低
Why is the CMB radiation in the microwave range and what range was it in when it was first formed?
为什么CMB辐射在微波范围内，它最初形成时在什么范围内？
the wavelengths of the CMB radiation has been stretched out for 13.5 billion years and is now in the microwave range.
CMB辐射的波长已经延伸了135亿年，现在处于微波范围内。
How does doppler radar work?
多普勒雷达是如何工作的？
Doppler radar works by sending out a wave of a specific frequency and then receiving back that wave after it has bounced off of an object and calculating the difference in frequency to determine size, location and motion of that object.
多普勒雷达的工作原理是发出一个特定频率的波，然后在它从物体反弹回来后接收该波，并计算频率差异以确定该物体的大小、位置和运动。
relic radiation from when atoms first formed in the beginning of the universe
宇宙开始时原子首次形成时的残余辐射
cosmic microwave background
宇宙微波背景
Astronomers discover that a planet regularly goes back and forth between having its light redshifted and then blueshifted, what does that mean?
天文学家发现一颗行星在光红移和蓝移之间有规律地来回移动，这意味着什么？
It could be moving around something else, like orbiting a star
它可能在其他东西周围运动，比如绕恒星运行
What is the big difference between all electromagnetic waves (like light) and mechanical waves (like sound), in terms of how they can travel?
就它们如何传播而言，所有电磁波（如光）和机械波（如声音）之间的最大区别是什么？
mechanical waves need a medium (like air) to move through, EM waves do not
机械波需要介质（如空气）才能通过，电磁波不需要
How many years after the big bang did atoms begin to form?
大爆炸后多少年原子开始形成？
380,000
As the frequency of sound waves change, does the speed of the sound change? How is this the same or different than with light waves?
随着声波频率的变化，声音的速度会发生变化吗？ 这与光波有何相同或不同？
For sound- It depends on the medium that the sound is moving through. For light- it always travels at the same speed.
对于声音 - 这取决于声音通过的介质。 对于光——它总是以相同的速度传播。
Name all the types of radiation on the electromagnetic spectrum (Without looking at a diagram)
列出电磁波谱上所有类型的辐射（不看图表）
Gamma rays, x rays, ultraviolet, visible light, infrared, microwaves, radio waves
伽马射线、X 射线、紫外线、可见光、红外线、微波、无线电波
What is spectroscopy?
什么是光谱学？
The study of how electromagnetic radiation and matter interact with each other, as a function of wavelength
研究电磁辐射和物质如何相互作用，作为波长的函数