Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 972 · 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.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it can pop loudly (c) it changes colour (d) it gets too heavy
2. 2.🎈 When does the balloon rocket stop? (a) it never stops (b) when it gets cold (c) when the air runs out (d) when it turns blue
3. 3.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) less friction (b) it goes faster (c) more friction, less far (d) no change at all
4. 4.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
5. 5.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) the balloon (d) gas from the rocket
6. 6.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
7. 7.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
8. 8.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
9. 9.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a drinking straw (c) a battery cell (d) a magnet
10. 10.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) a mirror (d) sticky tape
11. 11.⚖️ 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) distance it travels (c) the slope of the string (d) how big we blow it
12. 12.True or false: the rocket goes backward. (a) False (b) True
13. 13.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
14. 14.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) water a swimmer pushes (d) the rowing boat
15. 15.🎈 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
16. 16.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) vinegar (c) a long string (d) a drinking straw
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the slope of the string (b) how big we blow it (c) the same tape (d) distance it travels
18. 18.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) chew them (c) give them to a baby (d) throw them away safely
19. 19.True or false: the swimmer goes backward. (a) True (b) False
20. 20.🚀 Which of these goes forward? (a) water a swimmer pushes (b) air from the balloon (c) water from the oars (d) the rocket
21. 21.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it speeds up (d) it travels less far
22. 22.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it holds water (c) it guides the balloon (d) it blows air in
23. 23.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a sundial (d) a balloon rocket
24. 24.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
25. 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) yeast (c) a balloon (d) a drinking straw
26. 26.🔮 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
27. 27.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
28. 28.True or false: gas from the rocket goes forward. (a) False (b) True
29. 29.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
30. 30.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) two chairs (c) a long string (d) a balloon
31. 31.True or false: a magnet is not needed for the balloon rocket. (a) True (b) False
32. 32.⚖️ 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
33. 33.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is kept the same. (a) True (b) False
35. 35.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) blow it till it bursts (c) keep it away from faces (d) aim it at your friend
36. 36.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
37. 37.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) a battery cell (c) a long string (d) vinegar
38. 38.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) vinegar (c) yeast (d) a balloon
39. 39.⚖️ 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
40. 40.🧺 Do we need two chairs for the balloon rocket? (a) needed (b) not needed

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