Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 98 · 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 goes backward? (a) the balloon (b) air from the balloon (c) the swimmer (d) the rowing boat
2. 2.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) backward (c) it stays still (d) forward
3. 3.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes much farther (c) it flies off the string (d) it goes less far
4. 4.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it can pop loudly (d) it turns into a kite
5. 5.🛟 Which is a safe rule for the balloon rocket? (a) put string round a neck (b) keep it away from faces (c) blow it till it bursts (d) aim it at your friend
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.⚖️ 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 change it (c) we measure it
8. 8.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) chew them (d) give them to a baby
9. 9.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) False (b) True
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same tape (b) distance it travels (c) how big we blow it (d) the same straw
11. 11.🧺 Which of these is not needed for the balloon rocket? (a) vinegar (b) sticky tape (c) a long string (d) a drinking straw
12. 12.True or false: water from the oars goes backward. (a) True (b) False
13. 13.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
14. 14.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) escaping air pushes it (c) the straw is heavy (d) the string pulls it
16. 16.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it speeds up (d) it travels less far
17. 17.True or false: air from the balloon goes forward. (a) True (b) False
18. 18.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
19. 19.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
20. 20.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it guides the balloon (d) it makes it heavier
21. 21.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
22. 22.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
23. 23.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a drinking straw (c) sticky tape (d) a magnet
24. 24.True or false: the swimmer goes forward. (a) True (b) False
25. 25.⚖️ 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 keep it the same (c) we change it
26. 26.True or false: sticky tape is needed for the balloon rocket. (a) False (b) True
27. 27.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
28. 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a drinking straw (c) yeast (d) two chairs
29. 29.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
30. 30.⚖️ 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
31. 31.🚀 Which of these goes backward? (a) the rocket (b) the balloon (c) the rowing boat (d) water a swimmer pushes
32. 32.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) sticky tape (d) a battery cell
33. 33.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
34. 34.🎈 When does the balloon rocket stop? (a) when the air runs out (b) it never stops (c) when it turns blue (d) when it gets cold
35. 35.True or false: the rocket goes backward. (a) True (b) False
36. 36.True or false: gas from the rocket goes forward. (a) False (b) True
37. 37.⚖️ 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 tape (c) distance it travels
38. 38.True or false: a long string is needed for the balloon rocket. (a) True (b) False
39. 39.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) False (b) True

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