Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 918 · 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.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) False (b) True
3. 3.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels less far (c) it speeds up (d) it travels farther
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) False (b) True
6. 6.⚖️ 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
7. 7.True or false: water a swimmer pushes goes forward. (a) True (b) False
8. 8.True or false: water from the oars goes backward. (a) False (b) True
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) the same straw (c) distance it travels (d) how big we blow it
10. 10.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) it stays still (c) backward (d) forward
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) False (b) True
12. 12.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a fridge magnet (d) a balloon rocket
13. 13.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
14. 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) sticky tape (c) a drinking straw (d) two chairs
15. 15.True or false: two chairs is not needed for the balloon rocket. (a) False (b) True
16. 16.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
17. 17.🚀 Which of these goes backward? (a) water from the oars (b) the rowing boat (c) the swimmer (d) the rocket
18. 18.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) yeast (d) a balloon
20. 20.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same straw
21. 21.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) throw them away safely (d) keep them in your mouth
22. 22.🛟 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
23. 23.⚖️ 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
24. 24.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
25. 25.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) yeast (c) turmeric powder (d) a long string
26. 26.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) escaping air pushes it (d) a magnet pulls it
27. 27.⚖️ 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) distance it travels (c) the same string
28. 28.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.True or false: the balloon goes backward. (a) False (b) True
33. 33.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) blow it till it bursts (d) aim it at your friend
34. 34.🔮 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
35. 35.True or false: the rowing boat goes backward. (a) False (b) True
36. 36.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
37. 37.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
38. 38.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
39. 39.🔮 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
40. 40.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed

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