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The Universe

The Universe. Essential Question. How do scientists think our universe was created, and what is the evidence that supports it?. The Universe . Defined as everything that physically exists All of space and time All forms of matter and energy. The Big Bang Theory.

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The Universe

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  1. The Universe

  2. Essential Question • How do scientists think our universe was created, and what is the evidence that supports it?

  3. The Universe • Defined as everything that physically exists • All of space and time • All forms of matter and energy

  4. The Big Bang Theory • All galaxies started from one huge mass of densely packed matter • The densely packed matter exploded with a “big bang” sending out matter and energy in all directions • Over time the matter grouped together to form the stars and galaxies that now exist

  5. Click on the video below • Once you get to the webpage, click “Login” • Username: txau_dobie • Password: aisd • The Big Bang Theory Click here

  6. Light waves • Light travels in waves, each color has a specific wavelength

  7. The Red Shift • Evidence that the universe is expanding (supports Big Bang Theory) • Distant galaxies give off a red light • The red end of the spectrum has the longest wavelengths

  8. The Red Shift • If a galaxy is moving far away, the wavelengths become longer (or stretched out) • All galaxies beyond our own show a red shift, so it is believed that the universe is expanding

  9. Blue Shift • If an object is moving closer to Earth, then the wavelengths get shorter which to the human eye appears blue • This proves that galaxies and stars are moving towards us as well

  10. Red Shift and Blue Shift

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