Theory Support
The theory that the universe was condensed, and expanded outwards.
The Big Bang Theory
The term for the change in the frequency or pitch of a wave when the source and the observer move relative to each other. (Hint: Think of when an ambulance drives past you)
Doppler Effect
What does 'AU' stand for?
Astronomical Units
True or False: Red galaxy light supports the universe expanding.
True.
With a lower frequency, what wavelength is seen?
Longer
True or False: A light year is further than an AU.
True! 1 Light Year = 63241 AU
The telescope that helped scientists see galaxies.
Hubble Telescope
When there is a higher frequency, what wavelength is seen?
Shorter.
Astronomical Units (AU) are used to measure between this planet and star.
The Earth and Sun.
Who helped prove the universe is expanding?
Edwin Hubble
What colors are associated with the following:
1. shorter wavelength/higher frequency
2. longer wavelength/lower frequency
2. Red
Of the three (Light Year, AU, Parsec), place the following in order from largest measurement to smallest.
Parsec -> Light Year -> AU
Name two pieces of evidence that support the theory.
Cosmic Background Radiation
Relative Abundance of the Elements
The red shift means galaxies are moving which direction from Earth?
Away from Earth
Which is bigger, kilometer (km) or meter (m)?
Kilometer (km) Remember, there are 1000 meters in a kilometer.