← Yeast balloon lesson New set →

Yeast Balloon Experiment Worksheet

Science experiments lesson 16: Yeast balloon · Set 317 · 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.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) False (b) True
  2. 2.🍞 Which of these is something yeast needs? (a) vinegar (b) salt (c) time (d) sunlight
  3. 3.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a battery cell (c) sugar (d) a small bottle
  4. 4.True or false: a magnet is needed for the yeast balloon. (a) False (b) True
  5. 5.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a magnet (c) a balloon (d) dry yeast
  6. 6.🛟 The water for the yeast should be ___. (a) ice cold (b) boiling hot (c) very salty (d) warm, not hot
  7. 7.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
  8. 8.🔍 Which is the odd one out? (a) sugar (b) sunlight (c) vinegar (d) a magnet
  9. 9.🍞 Where is yeast used in the kitchen? (a) to make bread rise (b) to wash dishes (c) to clean floors (d) to colour rice
  10. 10.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) vinegar (d) time
  11. 11.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is kept the same. (a) True (b) False
  12. 12.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) turmeric powder (c) sugar (d) a small bottle
  13. 13.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) the balloon is bigger (c) it shrinks to nothing (d) the balloon is smaller
  14. 14.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
  15. 15.⚖️ 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) size of the balloon (b) the same bottles (c) the water temperature (d) the amount of yeast
  16. 16.True or false: a magnet is something yeast does not need. (a) False (b) True
  17. 17.True or false: sugar is not needed for the yeast balloon. (a) False (b) True
  18. 18.True or false: a small bottle is not needed for the yeast balloon. (a) True (b) False
  19. 19.🔍 Which is the odd one out? (a) time (b) salt (c) warm water (d) sugar
  20. 20.True or false: a battery cell is needed for the yeast balloon. (a) True (b) False
  21. 21.🔍 Which is the odd one out? (a) vinegar (b) a magnet (c) sunlight (d) time
  22. 22.⚖️ 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 measure it (b) we keep it the same (c) we change it
  23. 23.True or false: a mirror is needed for the yeast balloon. (a) False (b) True
  24. 24.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows very little (b) it bursts at once (c) it turns yellow (d) it grows much faster
  25. 25.🔍 Which is the odd one out? (a) time (b) vinegar (c) warm water (d) sugar
  26. 26.True or false: a comb is needed for the yeast balloon. (a) True (b) False
  27. 27.True or false: a comb is not needed for the yeast balloon. (a) True (b) False
  28. 28.🔍 Which is the odd one out? (a) sugar (b) time (c) sunlight (d) warm water
  29. 29.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) False (b) True
  30. 30.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is what we measure. (a) False (b) True
  31. 31.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
  32. 32.🔍 Which is the odd one out? (a) a magnet (b) warm water (c) vinegar (d) salt
  33. 33.True or false: sugar is something yeast needs. (a) False (b) True
  34. 34.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
  35. 35.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) dry yeast (c) a paper clip (d) a small bottle
  36. 36.🍞 Does yeast need sunlight to make gas? (a) yeast needs it (b) yeast does not need it
  37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of yeast (b) the amount of water (c) size of the balloon (d) the same bottles
  38. 38.📘 What is yeast? (a) a kind of stone (b) a kind of salt (c) a tiny living fungus (d) a kind of sugar
  39. 39.🍞 Why does yeast work slowly in cold water? (a) cold makes it pink (b) cold water is heavy (c) cold slows yeast down (d) cold kills sugar
  40. 40.⚖️ 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) False (b) True

Answer key

  1. True
  2. time
  3. a battery cell
  4. False
  5. a magnet
  6. warm, not hot
  7. needed
  8. sugar
  9. to make bread rise
  10. vinegar
  11. True
  12. turmeric powder
  13. the balloon is bigger
  14. yeast needs it
  15. the water temperature
  16. True
  17. False
  18. False
  19. salt
  20. False
  21. time
  22. we measure it
  23. False
  24. it grows very little
  25. vinegar
  26. False
  27. True
  28. sunlight
  29. False
  30. False
  31. yeast does not need it
  32. warm water
  33. True
  34. yeast needs it
  35. a paper clip
  36. yeast does not need it
  37. size of the balloon
  38. a tiny living fungus
  39. cold slows yeast down
  40. True

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