Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 65 · 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: water from the oars goes forward. (a) False (b) True
2. 2.⚖️ 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) distance it travels (c) the same tape (d) the same straw
3. 3.⚖️ 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
4. 4.🎈 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
5. 5.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.True or false: yeast is needed for the balloon rocket. (a) False (b) True
8. 8.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
9. 9.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
10. 10.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
11. 11.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) a magnet pulls it (d) escaping air pushes it
12. 12.True or false: the swimmer goes backward. (a) True (b) False
13. 13.🔮 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
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) a drinking straw (d) a battery cell
16. 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
17. 17.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
18. 18.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) it stays still (c) forward (d) straight down
19. 19.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
20. 20.🚀 Which of these goes forward? (a) gas from the rocket (b) water a swimmer pushes (c) the rowing boat (d) air from the balloon
21. 21.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) aim it at your friend (c) put string round a neck (d) keep it away from faces
22. 22.True or false: air from the balloon goes backward. (a) True (b) False
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) a magnet (c) yeast (d) a mirror
25. 25.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
26. 26.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a mirror (d) a balloon rocket
27. 27.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
30. 30.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) a drinking straw (c) a long string (d) sticky tape
31. 31.True or false: the rowing boat goes forward. (a) False (b) True
32. 32.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) keep them in your mouth (c) throw them away safely (d) chew them
33. 33.⚖️ 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 straw
34. 34.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it changes colour (d) it can pop loudly
35. 35.🧺 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
36. 36.🎈 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
37. 37.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it flies off the string (c) it turns into a kite (d) it goes much farther
38. 38.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it travels less far (d) it speeds up
39. 39.⚖️ 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
40. 40.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward

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