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Big tree2

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ο μικρόκοσμος

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Big tree2

  1. 1. Ένα ταξίδι στον μικρόκοσμο
  2. 2. Atoms are very tiny particles that form the building blocks for all matter What are Atoms?
  3. 3. • A microscope is used to look at very tiny objects by making them appear larger • It is sort of like a telescope or binoculars What Does a Microscope Do?
  4. 4. Let’s do a little exercise!! Just What Size Is an Atom? What you’ll need • A strip of paper • A pair of scissors What to do • Take your strip of paper and cut it into equal halves • Cut one of the remaining pieces of paper into equal halves • Repeat!
  5. 5. Cut 1 Just What Size Is an Atom? 14 cm Hand Pocke t
  6. 6. Cut 2 Just What Size Is an Atom? 7.0 cm Finger Ear
  7. 7. Cut 3 Just What Size Is an Atom? 3.5 cm Watch Mushroo m Eye
  8. 8. Cut 4 Just What Size Is an Atom? 1.75 cm Keyboard Key Ring Insect
  9. 9. Cut 5 Just What Size Is an Atom? 0.88 cm Keep going … atoms are much smaller!
  10. 10. Cut 6 Just What Size Is an Atom? 0.44 cm Tiny seeds on top of a Whopper bun
  11. 11. Cut 7 Just What Size Is an Atom? 0.22 cm Keep going … atoms are still much smaller!
  12. 12. Cut 8 Just What Size Is an Atom? 1.0 mm Thread
  13. 13. Cut 9 Just What Size Is an Atom? 0.5 mm It’s too difficult to keep cutting! Let’s just pretend from now on
  14. 14. Cut 10 Just What Size Is an Atom? 0.25 mm The size of one tiny light (pixel) on a computer screen
  15. 15. Cut 11 Just What Size Is an Atom? 0.125 mm Wow, I didn’t think anything was this small!
  16. 16. Cut 12 Just What Size Is an Atom? 0.06 mm A piece of hair
  17. 17. Cut 13 Just What Size Is an Atom? 0.03 mm Our meter has disappeared! ???
  18. 18. Cut 14 Just What Size Is an Atom? 0.015 mm The width of paper
  19. 19. Cut 15 Just What Size Is an Atom? 0.007 mm We’re not done yet keep cutting!
  20. 20. Cut 16 Just What Size Is an Atom? 0.003 mm Bacteria
  21. 21. Cut 17 Just What Size Is an Atom? 0.0015 mm We’re not done yet keep cutting!
  22. 22. Cut 18 Just What Size Is an Atom? 1.0 micron Water filter
  23. 23. Cut 19 Just What Size Is an Atom? 0.5 micron We’re not done yet keep cutting!
  24. 24. Cut 20 Just What Size Is an Atom? 0.25 micron Tiny wires inside a computer chip
  25. 25. Cut 21 Just What Size Is an Atom? 0.13 micron We’re not done yet keep cutting!
  26. 26. Cut 22 Just What Size Is an Atom? 0.07 micron Virus
  27. 27. Cut 23 Just What Size Is an Atom? 0.03 micron We’re not done yet keep cutting!
  28. 28. Cut 24 Just What Size Is an Atom? 0.015 micron We’re not done yet keep cutting!
  29. 29. Cut 25 Just What Size Is an Atom? 0.008 micron We’re not done yet keep cutting!
  30. 30. Cut 26 Just What Size Is an Atom? 0.004 micron Almost there 5 Cuts left
  31. 31. Cut 27 Just What Size Is an Atom? 0.002 micron Almost there 4 Cuts left
  32. 32. Cut 28 Just What Size Is an Atom? 0.001 micron Almost there 3 Cuts left
  33. 33. Cut 29 Just What Size Is an Atom? 0.0005 micron Almost there 2 Cuts left
  34. 34. Cut 30 Just What Size Is an Atom? 0.00025 micron Almost there 1 Cut left
  35. 35. Cut 31 Just What Size Is an Atom? 0.00013 micron Atoms !!! C H O N He Na Cl Ca
  36. 36. Periodic Table
  37. 37. How Many Atoms Are In A Person? that’s … eight million-million- million-million-thousand atoms Wow! Around … 8,000,000,000,000,000,000,000,000,000
  38. 38. Molecules are very small objects that are made up of connected atoms What are Molecules?
  39. 39. What Do Molecules Look Like? Molecules can take on all kinds of different shapes and sizes Let’s look at a few!
  40. 40. H H Water O H2O
  41. 41. Air O O NN Nitrogen Oxygen
  42. 42. Sugar
  43. 43. Salt
  44. 44. Plastic
  45. 45. Protein
  46. 46. DNA
  47. 47. Do Molecules Move? Yes, they sure do! How do they move? It depends on whether they are in a solid, liquid, or gas

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