The EM Spectrum
Light is also called by this name.
Electromagnetic Radiation
True or False: All light travels at different speeds in space.
False: all light travels at the same speed in space
The definition of a scientific theory.
An explanation supported by evidence.
The shift of wavelengths towards the red end of the visible light spectrum.
Redshift.
The leftover energy from the Big Bang; it is made of microwave radiation.
The Cosmic Microwave Background
The four parts of a wave.
Wavelength, crest, trough, amplitude.
Light is this type of wave.
Transverse wave.
The definition of a hypothesis.
A possible answer to a question.
Bright or dark lines on the visible light spectrum at specific wavelengths.
Spectral lines.
The two most common elements in the universe.
Hydrogen and Helium
The 7 different types of light.
Radio, microwave, infrared, visible, ultraviolet, x-ray, gamma.
The equation used to determine the speed of a wave.
v = f x λ
What scientists theorize the universe began as 13.8 billion years ago.
A single/small point.
The reason why a galaxy or star appears redshifted.
The wavelengths are stretched as it moves away from Earth.
How the Cosmic Microwave Background Radiation has changed throughout the universe's history.
The color of visible light with the shortest wavelength.
Violet/purple.
The variable wavelength is represented by this symbol.
Lambda - λ
3 ways the universe is different today than just after the Big Bang.
Today it is cooler, bigger, and less dense.
The farther away a galaxy is from Earth the faster it is moving away.
Hubble's Law
Why the Cosmic Microwave Background is evidence for the Big Bang Theory.
It proves the universe was very hot at the beginning.
The factors/variables that determine how light is arranged on the electromagnetic spectrum.
Wavelength, frequency, and energy.
The relationship between frequency and wavelength for light in space.
As one decreases, the other increases.
The reasons a scientific theory is strong/good/reliable.
1. has enough evidence
2. facts that don't change
3. can be tested by multiple scientists
How redshift and Hubble's Law are evidence for the Big Bang Theory.
They both prove the universe is expanding.
How the two most common elements in the universe support the Big Bang Theory.
The amount of each element proves the universe was hot and dense after the Big Bang.