Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 528 · 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.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it turns blue (c) it never stops (d) when it gets cold
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it speeds up (c) it goes backward first (d) it travels less far
4. 4.⚖️ 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
5. 5.🚀 Which of these goes forward? (a) water from the oars (b) the rowing boat (c) water a swimmer pushes (d) air from the balloon
6. 6.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) two chairs (c) sticky tape (d) a drinking straw
7. 7.⚖️ 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
8. 8.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
9. 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) two chairs (d) a mirror
10. 10.🚀 Which of these goes forward? (a) water a swimmer pushes (b) gas from the rocket (c) the balloon (d) air from the balloon
11. 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) yeast (c) two chairs (d) a drinking straw
12. 12.True or false: a long string is needed for the balloon rocket. (a) False (b) True
13. 13.⚖️ 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 tape
14. 14.⚖️ 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
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) it goes faster (c) less friction (d) more friction, less far
17. 17.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) it stays still (d) backward
18. 18.🔮 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
19. 19.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
20. 20.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
21. 21.True or false: gas from the rocket goes backward. (a) False (b) True
22. 22.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
23. 23.True or false: gas from the rocket goes forward. (a) False (b) True
24. 24.🚀 Which of these goes backward? (a) water a swimmer pushes (b) the rocket (c) the rowing boat (d) the swimmer
25. 25.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a sundial (b) a balloon rocket (c) a fridge magnet (d) a mirror
26. 26.⚖️ 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
27. 27.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the straw is heavy (c) a magnet pulls it (d) the string pulls it
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) the same string (c) the same tape (d) how big we blow it
29. 29.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a mirror (c) two chairs (d) turmeric powder
30. 30.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) a balloon (d) a battery cell
32. 32.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
33. 33.🎈 What is the job of the straw on the string? (a) it blows air in (b) it guides the balloon (c) it makes it heavier (d) it holds water
34. 34.⚖️ 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
35. 35.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it can pop loudly (d) it changes colour
36. 36.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
37. 37.🚀 Which of these goes backward? (a) the balloon (b) air from the balloon (c) the swimmer (d) the rocket
38. 38.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) two chairs (c) a magnet (d) a drinking straw
39. 39.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a battery cell (c) a long string (d) vinegar
40. 40.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) chew them (c) keep them in your mouth (d) give them to a baby

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