P2h Big Bang

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P2h Big Bang

  1. 1. P2h The Big Bang
  2. 2. Our Universe What it is like, how it started, how it evolved to its current state, and how it will end Today we will talk about:
  3. 3. <ul><li>First, let’s look at some of the objects we might find if we explored our Universe </li></ul>
  4. 4. Where do we live?
  5. 5. Where is the Earth?
  6. 6. The Solar System
  7. 7. Q: What is a STAR?
  8. 9. Our Sun is a star !
  9. 10. What is this?
  10. 11. What is it made of?
  11. 13. MANY STARS
  12. 14. MANY STARS SOME SUN-LIKE
  13. 15. You are here!
  14. 17. Our Galaxy from the Earth
  15. 18. Galaxies: Hubble Space telescope image
  16. 19. ‘ Zoom out’ - galaxies form filaments and voids
  17. 20. IN THE BEGINNING…….
  18. 21. EVERYTHING!
  19. 22. EVERYTHING!
  20. 23. EVERYTHING! ENERGY INCREASING, BECOMING LIKE A BOMB……. STARTS EXPANDING…..
  21. 24. Tick tick tick……
  22. 25. BOOM!
  23. 27. COSMIC ‘SOUP’
  24. 28. PROTON NEUTRON ELECTRON COSMIC ‘SOUP’
  25. 29. <ul><li>Universe much cooler, atoms start to form….. </li></ul><ul><li>Hydrogen, Helium, normal ‘stuff’ </li></ul>300,000 Years Later…..
  26. 31. Universe is now a GAS
  27. 32. Universe is now a GAS HYDROGEN HELIUM
  28. 34. GRAVITY!
  29. 35. Gravitational Collapse
  30. 36. Gravitational Collapse
  31. 37. If we could view the Universe from outside, if would look like this:
  32. 38. But we are inside one of these galaxies, so all we see are the nearby stars. We can see other galaxies if we use a telescope
  33. 39. The Gemini Telescope
  34. 42. What have we learnt? <ul><li>The Universe started with a BIG BANG </li></ul><ul><li>Gradually the particles were drawn together under GRAVITY to form STARS and GALAXIES </li></ul><ul><li>Many stars have planets around them </li></ul><ul><li>The fate of the Universe is uncertain… </li></ul>
  35. 43. Big Bang - Tasks <ul><li>Discuss & do in Pairs </li></ul><ul><li>Design a time-line of events since the Big Bang </li></ul><ul><li>What evidence is there to support the Big Bang theory? </li></ul><ul><li>Decide on 2 non-fact-based questions to ask the rest of the class on this topic </li></ul>
  36. 45. Research and Discussion Points
  37. 46. Research and Discussion Points <ul><li>What was there before the Big Bang? </li></ul><ul><li>What caused the Big Bang? </li></ul><ul><li>How big is the Universe? </li></ul><ul><li>Will the Universe keep expanding? </li></ul>
  38. 47. THE END?

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