Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 791 · 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 drinking straw (c) a magnet (d) turmeric powder
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) a balloon (c) a drinking straw (d) two chairs
4. 4.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a balloon rocket (d) a sundial
5. 5.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) the swimmer (d) gas from the rocket
6. 6.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
7. 7.🛟 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
8. 8.True or false: air from the balloon goes forward. (a) True (b) False
9. 9.True or false: the balloon goes forward. (a) False (b) True
10. 10.⚖️ 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
11. 11.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
13. 13.🚀 Which of these goes forward? (a) air from the balloon (b) water a swimmer pushes (c) the rocket (d) water from the oars
14. 14.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the rocket (c) the swimmer (d) the balloon
15. 15.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) aim it at your friend (c) keep it away from faces (d) put string round a neck
16. 16.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) no change at all (c) more friction, less far (d) less friction
17. 17.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) forward (c) it stays still (d) backward
18. 18.True or false: the swimmer goes backward. (a) False (b) True
19. 19.🎈 What is the job of the straw on the string? (a) it blows air in (b) it holds water (c) it guides the balloon (d) it makes it heavier
20. 20.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes much farther (c) it goes less far (d) it flies off the string
21. 21.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
22. 22.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.True or false: the balloon 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 the one thing we change. (a) True (b) False
26. 26.⚖️ 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 slope of the string (c) distance it travels
27. 27.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) give them to a baby (d) throw them away safely
28. 28.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a battery cell (c) sticky tape (d) a drinking straw
30. 30.True or false: the swimmer goes forward. (a) True (b) False
31. 31.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
34. 34.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) gas from the rocket (d) the balloon
35. 35.True or false: water from the oars goes forward. (a) False (b) True
36. 36.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
37. 37.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
38. 38.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
39. 39.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same string (c) how big we blow it
40. 40.True or false: a magnet is not needed for the balloon rocket. (a) False (b) True

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