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Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 411 · 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.

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  1. 1.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) sugar (c) warm water (d) a comb
  2. 2.⚖️ 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 water temperature (b) the amount of water (c) the amount of sugar (d) size of the balloon
  3. 3.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) dry yeast (c) a small bottle (d) a paper clip
  4. 4.True or false: a balloon is needed for the yeast balloon. (a) True (b) False
  5. 5.🍞 Why does yeast work slowly in cold water? (a) cold slows yeast down (b) cold makes it pink (c) cold kills sugar (d) cold water is heavy
  6. 6.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
  7. 7.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) dry yeast (c) a paper clip (d) a magnet
  8. 8.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
  9. 9.🍞 Which of these is something yeast needs? (a) sunlight (b) a magnet (c) vinegar (d) time
  10. 10.🍞 Where is yeast used in the kitchen? (a) to wash dishes (b) to clean floors (c) to colour rice (d) to make bread rise
  11. 11.True or false: sugar is something yeast needs. (a) False (b) True
  12. 12.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
  13. 13.🧺 Do we need warm water for the yeast balloon? (a) needed (b) not needed
  14. 14.⚖️ 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 change it (b) we keep it the same (c) we measure it
  15. 15.🔍 Which is the odd one out? (a) sunlight (b) vinegar (c) a magnet (d) sugar
  16. 16.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
  17. 17.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) dry yeast (c) a small bottle (d) a mirror
  18. 18.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is kept the same. (a) True (b) False
  19. 19.⚖️ 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
  20. 20.True or false: sunlight is something yeast does not need. (a) False (b) True
  21. 21.🛟 The water for the yeast should be ___. (a) very salty (b) boiling hot (c) warm, not hot (d) ice cold
  22. 22.True or false: sugar is something yeast does not need. (a) True (b) False
  23. 23.🔍 Which is the odd one out? (a) salt (b) sunlight (c) a magnet (d) time
  24. 24.🍞 Which of these is something yeast needs? (a) sunlight (b) warm water (c) vinegar (d) a magnet
  25. 25.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) sugar (c) a balloon (d) dry yeast
  26. 26.🔍 Which is the odd one out? (a) sugar (b) time (c) warm water (d) sunlight
  27. 27.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) turmeric powder (c) a paper clip (d) a small bottle
  28. 28.⚖️ 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 change it (b) we keep it the same (c) we measure it
  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 water”? (a) we measure it (b) we change it (c) we keep it the same
  30. 30.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the water temperature (b) the same bottles (c) size of the balloon
  31. 31.🧺 Do we need sugar for the yeast balloon? (a) not needed (b) needed
  32. 32.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) sugar (c) dry yeast (d) a magnet
  33. 33.🧺 Do we need a comb for the yeast balloon? (a) needed (b) not needed
  34. 34.⚖️ 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 change it (b) we measure it (c) we keep it the same
  35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
  36. 36.🔍 Which is the odd one out? (a) time (b) sugar (c) a magnet (d) warm water
  37. 37.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
  38. 38.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
  39. 39.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a paper clip (c) a balloon (d) a magnet
  40. 40.🍞 Which of these is something yeast does not need? (a) time (b) sugar (c) vinegar (d) warm water

Answer key

  1. a comb
  2. the water temperature
  3. a paper clip
  4. True
  5. cold slows yeast down
  6. yeast needs it
  7. dry yeast
  8. not needed
  9. time
  10. to make bread rise
  11. True
  12. yeast needs it
  13. needed
  14. we measure it
  15. sugar
  16. not needed
  17. a mirror
  18. False
  19. True
  20. True
  21. warm, not hot
  22. False
  23. time
  24. warm water
  25. a battery cell
  26. sunlight
  27. a small bottle
  28. we keep it the same
  29. we keep it the same
  30. the same bottles
  31. needed
  32. a magnet
  33. not needed
  34. we keep it the same
  35. we change it
  36. a magnet
  37. yeast needs it
  38. yeast does not need it
  39. a balloon
  40. vinegar

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