Scale of the Universe. Do Now Answer the following questions based on the big bang movie 1.What evidence is there to support the Big Bang Theory? 2.What.

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Presentation transcript:

Scale of the Universe

Do Now Answer the following questions based on the big bang movie 1.What evidence is there to support the Big Bang Theory? 2.What is happening to the size of the universe?

Objectives 1.Explain the Big Bang Theory and provide evidence to support it red blue 2.Explain the significance of red shift and blue shift 3.Arrange parts of the universe in order based on size

Big Bang Theory m/watch?v=Rx05beJO ooE

The universe started as a single point ~10-20 bya That point was extremely dense It became unstable & exploded outward Universe is still expanding today What is the Big Bang Theory

Review of Electromagnetic Spectrum

Change in the wavelength of light emitted by an object due to its motion

Blueshift Wavelengths shorten What can this shift tell us about the movement of the star? –It is moving towards Earth

Redshift Wavelengths become longer What can this shift tell us about the movement of the star? –It is moving away from Earth

Elemental Emission Spectrums

What do the elements look like?? Emission & Absorption Spectrum

The greater the degree of shift of the spectral lines, the faster the object is moving away greater the degree greater the degree

Put these in order of size: galaxysolar systemuniverse universegalaxy solar system

Exit Questions Take out a piece of looseleaf. On the TOP of your paper please: 1.Put your name 2.Put the date 3.Your answer to the question

What is the best inference that can be made concerning the movements of Galaxies A, B, and C?

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