Balloon Rocket STEM Worksheet
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.
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- 1.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a battery cell (c) a balloon (d) two chairs
- 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we keep it the same (b) we change it (c) we measure it
- 3.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) it stays still (c) backward (d) forward
- 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) False (b) True
- 5.⚖️ 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 string
- 6.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
- 7.🚀 Which of these goes backward? (a) the rowing boat (b) gas from the rocket (c) the balloon (d) the swimmer
- 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 change it (c) we keep it the same
- 9.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes less far (c) it turns into a kite (d) it goes much farther
- 10.🧺 Which of these is not needed for the balloon rocket? (a) a battery cell (b) sticky tape (c) a balloon (d) a drinking straw
- 11.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) turmeric powder (c) vinegar (d) a mirror
- 12.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
- 13.🎈 Why does the balloon rocket move along the string? (a) the straw is heavy (b) the string pulls it (c) escaping air pushes it (d) a magnet pulls it
- 14.🚀 Which of these goes forward? (a) air from the balloon (b) water a swimmer pushes (c) gas from the rocket (d) the rowing boat
- 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) False (b) True
- 16.True or false: two chairs is not needed for the balloon rocket. (a) True (b) False
- 17.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) put string round a neck (d) blow it till it bursts
- 18.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
- 19.True or false: the swimmer goes backward. (a) True (b) False
- 20.True or false: the rowing boat goes forward. (a) True (b) False
- 21.True or false: yeast is needed for the balloon rocket. (a) True (b) False
- 22.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) turmeric powder (d) a drinking straw
- 23.True or false: vinegar is not needed for the balloon rocket. (a) False (b) True
- 24.True or false: water from the oars goes backward. (a) False (b) True
- 25.True or false: a long string is needed for the balloon rocket. (a) True (b) False
- 26.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a balloon (c) a battery cell (d) turmeric powder
- 27.True or false: turmeric powder is not needed for the balloon rocket. (a) False (b) True
- 28.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a balloon (c) a mirror (d) a drinking straw
- 29.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) sticky tape (c) turmeric powder (d) vinegar
- 30.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
- 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) vinegar (c) a long string (d) two chairs
- 32.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
- 33.True or false: the balloon goes backward. (a) False (b) True
- 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a drinking straw (c) a magnet (d) sticky tape
- 35.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a drinking straw (c) two chairs (d) a long string
- 36.True or false: water a swimmer pushes goes backward. (a) True (b) False
- 37.⚖️ 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
- 38.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
- 39.🎈 What is the job of the straw on the string? (a) it holds water (b) it guides the balloon (c) it makes it heavier (d) it blows air in
- 40.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) air from the balloon (d) the rocket
Answer key
- a battery cell
- we measure it
- forward
- False
- the same string
- goes backward
- gas from the rocket
- we keep it the same
- it goes less far
- a battery cell
- a drinking straw
- goes backward
- escaping air pushes it
- the rowing boat
- False
- False
- keep it away from faces
- needed
- False
- True
- False
- turmeric powder
- True
- True
- True
- a balloon
- True
- a mirror
- sticky tape
- needed
- vinegar
- not needed
- False
- a magnet
- yeast
- True
- we keep it the same
- goes backward
- it guides the balloon
- air from the balloon
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