Balloon Rocket STEM Worksheet

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

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids