Red shift

• The dark bonds that appear in otherwise continuous spectrum from a black body are called

  Absorption spectra
• If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be

  Moving towards Earth
• These have the longest wavelength and lowest frequency

  Radio Waves
• An object is moving VERY fast away from Earth would have _______ than an object that is moving very slow away from Earth

  More Redshift
• When redshift occurs, the perceived wavelength of the wave should

  Increase
• A light year is


  The distance light travels in one year
• A light year is related to


  Distance
• Waves that have the shortest wavelength and the highest frequency


  Gamma
• The distance between one point of a wave to the same point in the next wave


  Wavelength
• The vast majority of galaxies in our universe are moving away from us. We know this because we observe ______ in the galaxies absorption spectra

  Redshift
• True or False: Every element has its own unique emission spectrum

  True
• In the 1920s Edwin Hubble made observations of many distant galaxies and formulated Hubble's law which states that galaxies are


  More distant are moving away faster with a greater apparent redshift in their spectra.
• When blueshift occurs, the perceived wavelength of the waveshould

  Decrease
• The Big Bang Theory occurred approximately how long ago?

  13.7 billion years
• A red shift in the observer light from very distant galaxies suggests that the universe is

  Constantly expanding
• All electromagnetic waves travel at

  The Speed of light
• Which section of the spectrum is the ONLY one we can see?

  Visible light
• In our expanding universe

  Galaxies appear to move away due to the expansion of space itself
• The majority of matter in the universe is made of which two elements that formed shortly after the Big Bang?

  Hydrogen and Helium
• If a star is being observed from Earth and it's light has shifted towards the red side of the electromagnetic spectrum it would be

  Moving away from Earth