Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 840 · 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: vinegar is needed for the balloon rocket. (a) False (b) True
2. 2.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels less far (d) it travels farther
3. 3.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it guides the balloon (c) it blows air in (d) it holds water
4. 4.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it can pop loudly (c) it gets too heavy (d) it turns into a kite
5. 5.🎈 When does the balloon rocket stop? (a) when it turns blue (b) when the air runs out (c) it never stops (d) when it gets cold
6. 6.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
7. 7.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) less friction (c) no change at all (d) more friction, less far
8. 8.🧺 Which of these is needed for the balloon rocket? (a) a balloon (b) a mirror (c) a magnet (d) a battery cell
9. 9.True or false: water from the oars goes backward. (a) False (b) True
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) how big we blow it (c) the same straw (d) the same tape
11. 11.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a mirror (c) two chairs (d) a battery cell
12. 12.True or false: the swimmer goes backward. (a) True (b) False
13. 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) yeast (c) a long string (d) a balloon
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
16. 16.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
17. 17.True or false: two chairs is needed for the balloon rocket. (a) True (b) False
18. 18.🚀 Which of these goes forward? (a) gas from the rocket (b) water from the oars (c) the balloon (d) air from the balloon
19. 19.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
20. 20.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
21. 21.🚀 Which of these goes backward? (a) the rocket (b) the balloon (c) air from the balloon (d) the rowing boat
22. 22.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) a magnet pulls it (d) escaping air pushes it
23. 23.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
24. 24.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) backward (c) forward (d) straight down
25. 25.⚖️ 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 measure it (c) we change it
26. 26.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a magnet (c) two chairs (d) a balloon
27. 27.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
31. 31.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it turns into a kite (c) it goes much farther (d) it goes less far
32. 32.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
33. 33.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) yeast (c) a long string (d) vinegar
34. 34.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) a long string (c) a drinking straw (d) two chairs
35. 35.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
36. 36.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) two chairs (d) a drinking straw
37. 37.🧺 Which of these is not needed for the balloon rocket? (a) turmeric powder (b) a long string (c) two chairs (d) a balloon
38. 38.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) keep it away from faces (c) put string round a neck (d) aim it at your friend
39. 39.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
40. 40.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed

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