Balloon Rocket STEM Worksheet

Science experiments lesson 7: Balloon rocket · Set 921 · 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 forward? (a) the swimmer (b) water a swimmer pushes (c) water from the oars (d) gas from the rocket
2. 2.🎈 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
3. 3.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
4. 4.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) throw them away safely (d) keep them in your mouth
5. 5.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) more friction, less far (c) no change at all (d) less friction
6. 6.🛟 Why should you not over-blow the balloon? (a) it can pop loudly (b) it gets too heavy (c) it turns into a kite (d) it changes colour
7. 7.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it travels farther (c) it travels less far (d) it goes backward first
8. 8.True or false: a mirror is not needed for the balloon rocket. (a) False (b) True
9. 9.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) when it turns blue (d) it never stops
10. 10.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a sundial (d) a balloon rocket
11. 11.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
12. 12.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same tape (c) how big we blow it
13. 13.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
14. 14.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) put string round a neck (c) aim it at your friend (d) keep it away from faces
15. 15.⚖️ 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 keep it the same (c) we change it
16. 16.🚀 Which of these goes backward? (a) the rocket (b) the swimmer (c) the balloon (d) air from the balloon
17. 17.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
18. 18.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
19. 19.🔮 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 less far (d) it goes much farther
20. 20.True or false: water from the oars goes forward. (a) False (b) True
21. 21.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a long string (c) sticky tape (d) a mirror
22. 22.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) a magnet pulls it (c) the straw is heavy (d) escaping air pushes it
23. 23.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it holds water (c) it blows air in (d) it guides the balloon
24. 24.⚖️ 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 change it (c) we keep it the same
25. 25.🧺 Do we need a battery cell for the balloon rocket? (a) needed (b) not needed
26. 26.True or false: a mirror is needed for the balloon rocket. (a) False (b) True
27. 27.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
28. 28.🚀 Which of these goes backward? (a) the balloon (b) the rocket (c) water from the oars (d) the swimmer
29. 29.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) a long string (d) a drinking straw
30. 30.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) two chairs (c) yeast (d) vinegar
32. 32.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) True (b) False
33. 33.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) water a swimmer pushes (d) the rocket
34. 34.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
35. 35.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
36. 36.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) vinegar (c) two chairs (d) a balloon
37. 37.True or false: the swimmer goes backward. (a) False (b) True
38. 38.🚀 Which of these goes backward? (a) the rowing boat (b) water a swimmer pushes (c) the swimmer (d) the balloon
39. 39.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
40. 40.True or false: the balloon goes backward. (a) True (b) False

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