Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 333 · 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) yeast (b) a balloon (c) a battery cell (d) a magnet
2. 2.True or false: the balloon goes forward. (a) False (b) True
3. 3.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
5. 5.🎈 What is the job of the straw on the string? (a) it blows air in (b) it guides the balloon (c) it makes it heavier (d) it holds water
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
8. 8.🚀 Which of these goes forward? (a) air from the balloon (b) the rocket (c) water a swimmer pushes (d) water from the oars
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a magnet (c) a drinking straw (d) a long string
10. 10.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) straight down (c) backward (d) forward
11. 11.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
12. 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a balloon (c) two chairs (d) a battery cell
13. 13.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels less far (c) it goes backward first (d) it travels farther
14. 14.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) escaping air pushes it (c) the string pulls it (d) a magnet pulls it
15. 15.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
16. 16.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
17. 17.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
18. 18.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it turns blue (c) when it gets cold (d) it never stops
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) True (b) False
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) a drinking straw (d) vinegar
21. 21.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) sticky tape (c) a balloon (d) a magnet
22. 22.True or false: a long string is needed for the balloon rocket. (a) False (b) True
23. 23.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) water from the oars (d) the rocket
24. 24.True or false: the rocket goes backward. (a) True (b) False
25. 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) False (b) True
26. 26.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a balloon (c) two chairs (d) turmeric powder
28. 28.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) blow it till it bursts (c) keep it away from faces (d) put string round a neck
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
30. 30.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
31. 31.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
32. 32.True or false: a drinking straw is needed for the balloon rocket. (a) False (b) True
33. 33.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a balloon rocket (d) a fridge magnet
34. 34.⚖️ 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
35. 35.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
37. 37.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) less friction (c) more friction, less far (d) no change at all
38. 38.🚀 Which of these goes forward? (a) air from the balloon (b) the balloon (c) water from the oars (d) water a swimmer pushes
39. 39.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
40. 40.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour

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