Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 372 · 40 questions

What you do (Push back, move forward): 1. Thread the string through the straw and tie it tightly between two chairs. 2. Blow up the balloon (not too much) and pinch its neck shut. 3. Tape the balloon to the straw, neck pointing backward. 4. Let go, measure how far it goes, and keep it away from faces.

1. 1.True or false: the rowing boat goes backward. (a) True (b) False
2. 2.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) two chairs (c) a battery cell (d) vinegar
3. 3.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it gets too heavy (c) it can pop loudly (d) it turns into a kite
4. 4.🎈 When does the balloon rocket stop? (a) it never stops (b) when the air runs out (c) when it turns blue (d) when it gets cold
5. 5.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
6. 6.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) escaping air pushes it (c) the straw is heavy (d) the string pulls it
7. 7.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) turmeric powder (d) a drinking straw
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) it stays still (c) backward (d) forward
11. 11.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
12. 12.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a balloon (c) a long string (d) a drinking straw
13. 13.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) blow it till it bursts (c) put string round a neck (d) aim it at your friend
14. 14.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it turns into a kite (c) it goes much farther (d) it flies off the string
15. 15.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it speeds up (c) it travels less far (d) it goes backward first
16. 16.🚀 Which of these goes forward? (a) air from the balloon (b) the rowing boat (c) water a swimmer pushes (d) water from the oars
17. 17.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
18. 18.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
19. 19.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
20. 20.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it holds water (c) it makes it heavier (d) it blows air in
21. 21.🧺 Which of these is needed for the balloon rocket? (a) a balloon (b) yeast (c) turmeric powder (d) a magnet
22. 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is the one thing we change. (a) True (b) False
23. 23.True or false: a drinking straw is not needed for the balloon rocket. (a) False (b) True
24. 24.True or false: the swimmer goes backward. (a) False (b) True
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the slope of the string (c) how big we blow it (d) the same straw
26. 26.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) keep them in your mouth (d) throw them away safely
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same string
28. 28.True or false: water from the oars goes forward. (a) True (b) False
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🧺 Which of these is not needed for the balloon rocket? (a) turmeric powder (b) a balloon (c) sticky tape (d) a long string
31. 31.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) less friction (c) it goes faster (d) no change at all
32. 32.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) vinegar (c) a mirror (d) a drinking straw
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) True (b) False
34. 34.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
35. 35.True or false: the balloon goes backward. (a) True (b) False
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) False (b) True
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is the one thing we change. (a) True (b) False
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) a balloon (d) a battery cell
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) the same tape (c) distance it travels

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