the universe is expanding<br />Space Science- Chapter 4: Section 4.4<br />
The Story of Everything<br />By: Neal Layton<br />
How did the Universe begin?<br />The Big Bang Theory<br />
The Big Bang Theory<br />Movement in time when the universe started to expand out of an extremely hot and dense state<br /...
After the Big Bang the universe was very dense and hot<br />Energy and matter behaved differently because of the extreme c...
Development of the Universe<br />Earliest stage of development happened in fractions of a second<br />Took 300,00 years fo...
Review: What is a galaxy?<br />All space, energy and matter<br />
Using your marker draw a galaxy on a balloon<br />Draw either an irregular, spiral or elliptical galaxy<br />Measure the l...
Movement of Galaxies<br />How do we know that the galaxies are moving?<br />Hint: The light from the galaxy is either comp...
Review: What is the Electromagnetic Spectrum?<br />Energy that travels across a distance as certain types of waves<br />
What is the Doppler Effect?<br />Listen! <br />This is a car horn at 30/mph<br />http://www.physics.ucla.edu/demoweb/demom...
Galaxies that are moving towards Earth emit blue light because the waves are more compressed<br />Galaxies that are moving...
Galaxies Moving<br />A: Galaxy and Earth moving towards each other<br />B:  Galaxy moving away from Earth<br />C: Galaxy m...
4.4The Universe is Expanding
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4.4The Universe is Expanding

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This is the presentation that will be presented on Monday November 23rd 2009. It follows directly from the McDougal Littell: Space Science text.

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  • Occurred about 14 billion years ago
  • 4.4The Universe is Expanding

    1. 1. the universe is expanding<br />Space Science- Chapter 4: Section 4.4<br />
    2. 2. The Story of Everything<br />By: Neal Layton<br />
    3. 3. How did the Universe begin?<br />The Big Bang Theory<br />
    4. 4. The Big Bang Theory<br />Movement in time when the universe started to expand out of an extremely hot and dense state<br />It is estimated that in 1 second the universe expanded from the size of a speck of dust to the size of our solar system<br />
    5. 5. After the Big Bang the universe was very dense and hot<br />Energy and matter behaved differently because of the extreme conditions<br />We do not fully understand what the conditions were like in the early universe<br />
    6. 6. Development of the Universe<br />Earliest stage of development happened in fractions of a second<br />Took 300,00 years for the first elements to form<br />Stars, planets and galaxies began to appear within the next billion years<br />
    7. 7. Review: What is a galaxy?<br />All space, energy and matter<br />
    8. 8. Using your marker draw a galaxy on a balloon<br />Draw either an irregular, spiral or elliptical galaxy<br />Measure the length and width of the galaxy using a ruler<br />Blow up your balloon and tie it <br />Measure the length and width again.<br />What happened to your galaxy?<br />The galaxy is expanding! <br />
    9. 9. Movement of Galaxies<br />How do we know that the galaxies are moving?<br />Hint: The light from the galaxy is either compressing or stretching out<br />Astronomers use the Electromagnetic Spectrum and the Doppler Effect<br />
    10. 10. Review: What is the Electromagnetic Spectrum?<br />Energy that travels across a distance as certain types of waves<br />
    11. 11. What is the Doppler Effect?<br />Listen! <br />This is a car horn at 30/mph<br />http://www.physics.ucla.edu/demoweb/demomanual/acoustics/effects_of_sound/30_MPH_doppler.au<br />change in the observed wavelength or frequency of a wave that occurs when the source of the wave or the observer is moving<br />
    12. 12. Galaxies that are moving towards Earth emit blue light because the waves are more compressed<br />Galaxies that are moving away from Earth emit red light because the waves are stretched out<br />
    13. 13. Galaxies Moving<br />A: Galaxy and Earth moving towards each other<br />B: Galaxy moving away from Earth<br />C: Galaxy moving towards Earth<br />

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