Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 391 · 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.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) turmeric powder (c) a battery cell (d) a magnet
2. 2.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it turns into a kite (c) it can pop loudly (d) it gets too heavy
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) vinegar (b) a drinking straw (c) sticky tape (d) a balloon
4. 4.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) straight down (c) it stays still (d) forward
5. 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) yeast (c) two chairs (d) a balloon
6. 6.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) gas from the rocket (d) the rocket
7. 7.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
8. 8.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it speeds up (d) it travels less far
9. 9.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it flies off the string (c) it goes much farther (d) it goes less far
10. 10.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a battery cell (c) turmeric powder (d) sticky tape
11. 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) two chairs (d) a magnet
12. 12.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) aim it at your friend (c) blow it till it bursts (d) keep it away from faces
13. 13.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a mirror (c) a magnet (d) a balloon
14. 14.🛟 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
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
16. 16.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) yeast (d) a balloon
17. 17.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
18. 18.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) the string pulls it (d) escaping air pushes it
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same tape (b) the same straw (c) distance it travels (d) how big we blow it
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
23. 23.🎈 What is the job of the straw on the string? (a) it blows air in (b) it makes it heavier (c) it guides the balloon (d) it holds water
24. 24.True or false: the balloon goes forward. (a) False (b) True
25. 25.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) less friction (c) more friction, less far (d) it goes faster
26. 26.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) False (b) True
27. 27.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) a long string (c) two chairs (d) a balloon
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) True (b) False
29. 29.🚀 Which of these goes backward? (a) water from the oars (b) the rocket (c) the balloon (d) the rowing boat
30. 30.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
31. 31.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
32. 32.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) a balloon (c) sticky tape (d) two chairs
35. 35.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the swimmer (c) the rocket (d) the balloon
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same string (b) how big we blow it (c) distance it travels
37. 37.True or false: two chairs is needed for the balloon rocket. (a) True (b) False
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) the same straw (c) distance it travels (d) how big we blow it
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) False (b) True
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) turmeric powder (c) sticky tape (d) a balloon

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