← Yeast balloon lesson New set →

Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 7 · 40 questions
TalentJR

What you do (Yeast is alive): 1. Pour warm (not hot) water into the bottle — an adult checks it. 2. Add the yeast and the sugar and swirl gently. 3. Stretch the balloon over the bottle’s mouth. 4. Wait 30 minutes, measure the balloon, then pour the mixture away and wash up.

NameDateTime takenScore ___ / 40
  1. 1.🛟 The water for the yeast should be ___. (a) warm, not hot (b) ice cold (c) boiling hot (d) very salty
  2. 2.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
  3. 3.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) turmeric powder (c) dry yeast (d) a comb
  4. 4.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) True (b) False
  5. 5.True or false: a comb is needed for the yeast balloon. (a) True (b) False
  6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the amount of sugar (b) the water temperature (c) size of the balloon
  7. 7.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) dry yeast (c) a comb (d) warm water
  8. 8.True or false: a paper clip is not needed for the yeast balloon. (a) True (b) False
  9. 9.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
  10. 10.True or false: a paper clip is needed for the yeast balloon. (a) True (b) False
  11. 11.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
  12. 12.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we keep it the same (b) we measure it (c) we change it
  13. 13.🧺 Which of these is not needed for the yeast balloon? (a) sugar (b) a comb (c) dry yeast (d) warm water
  14. 14.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is kept the same. (a) True (b) False
  15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
  16. 16.🍞 Which of these is something yeast does not need? (a) time (b) warm water (c) sugar (d) salt
  17. 17.🎈 What blows up the balloon in the yeast experiment? (a) carbon dioxide gas (b) air from outside (c) smoke (d) steam
  18. 18.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of water (b) the amount of yeast (c) the water temperature (d) the amount of sugar
  19. 19.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) False (b) True
  20. 20.🍞 Which of these is something yeast needs? (a) vinegar (b) warm water (c) salt (d) sunlight
  21. 21.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
  22. 22.🧺 Do we need a paper clip for the yeast balloon? (a) not needed (b) needed
  23. 23.True or false: sunlight is something yeast does not need. (a) False (b) True
  24. 24.🔍 Which is the odd one out? (a) a magnet (b) sugar (c) time (d) warm water
  25. 25.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) warm water (c) a magnet (d) sugar
  26. 26.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a paper clip (c) a battery cell (d) warm water
  27. 27.True or false: warm water is something yeast does not need. (a) False (b) True
  28. 28.🍞 Which of these is something yeast needs? (a) a magnet (b) sunlight (c) sugar (d) salt
  29. 29.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we measure it (b) we keep it the same (c) we change it
  30. 30.🍞 Which of these is something yeast needs? (a) salt (b) time (c) a magnet (d) vinegar
  31. 31.True or false: a battery cell is not needed for the yeast balloon. (a) True (b) False
  32. 32.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
  33. 33.🧺 Do we need a balloon for the yeast balloon? (a) needed (b) not needed
  34. 34.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) warm water (c) a mirror (d) dry yeast
  35. 35.True or false: salt is something yeast does not need. (a) False (b) True
  36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
  37. 37.True or false: sunlight is something yeast needs. (a) False (b) True
  38. 38.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
  39. 39.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
  40. 40.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) a balloon (c) a magnet (d) a battery cell

Answer key

  1. warm, not hot
  2. needed
  3. dry yeast
  4. False
  5. False
  6. the amount of sugar
  7. a comb
  8. True
  9. not needed
  10. False
  11. needed
  12. we keep it the same
  13. a comb
  14. True
  15. we measure it
  16. salt
  17. carbon dioxide gas
  18. the water temperature
  19. True
  20. warm water
  21. yeast does not need it
  22. not needed
  23. True
  24. a magnet
  25. a magnet
  26. warm water
  27. False
  28. sugar
  29. we keep it the same
  30. time
  31. True
  32. we keep it the same
  33. needed
  34. a mirror
  35. True
  36. False
  37. False
  38. we keep it the same
  39. needed
  40. a balloon

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids