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Light, Emission Spectrum, & Big Bang Theory

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Across
The Big Bang Theory is the leading explanation of how the _______ began.
This type of light shift is evidence that the universe is expanding.
The longer the wavelength, the ______ energy a wave has.
Each element has it's own set of spectral lines. They are like a star's _____.
Cosmic microwave background is leftover ______ from the Big Bang.
This type of light shift occurs when 2 objects move towards each other.
These are the three main _______ for Big Bang Theory: red shift, an abundance of hydrogen and helium, cosmic background radiation
Down
Studying a star's __________, we know what it is composed of and what direction it's moving.
This law tells us galaxies that are farther away move faster.
This is the most abundant element in the universe.
This is the second most abundant element in the universe.
There wasn't an explosion; it was actually an ____.
_______ are the types of waves that the universe is now filled with.
Red and blue shifts in wavelengths are used to tell us the ________ an object is moving.
The higher the frequency, the ______ energy a wave has.