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.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the slope of the string (b) how big we blow it (c) the same straw (d) the same string
- 2.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) a magnet (c) sticky tape (d) two chairs
- 3.True or false: the rowing boat goes backward. (a) True (b) False
- 4.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) how big we blow it (c) distance it travels (d) the same straw
- 5.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
- 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
- 7.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
- 8.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
- 9.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
- 10.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we change it (b) we measure it (c) we keep it the same
- 11.🚀 Which of these goes backward? (a) the swimmer (b) the balloon (c) air from the balloon (d) the rocket
- 12.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
- 13.🚀 Which of these goes backward? (a) the rowing boat (b) gas from the rocket (c) the rocket (d) the swimmer
- 14.🔮 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
- 15.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) yeast (c) a drinking straw (d) a mirror
- 16.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a magnet (c) two chairs (d) vinegar
- 17.True or false: gas from the rocket goes forward. (a) True (b) False
- 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) two chairs (c) a balloon (d) yeast
- 19.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it can pop loudly (c) it changes colour (d) it gets too heavy
- 20.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a long string (c) yeast (d) a mirror
- 21.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a balloon (c) yeast (d) sticky tape
- 22.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
- 23.🎈 When does the balloon rocket stop? (a) it never stops (b) when the air runs out (c) when it gets cold (d) when it turns blue
- 24.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
- 25.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
- 26.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) put string round a neck (c) blow it till it bursts (d) keep it away from faces
- 27.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
- 28.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
- 29.🚀 Which of these goes forward? (a) gas from the rocket (b) air from the balloon (c) the balloon (d) water from the oars
- 30.True or false: air from the balloon goes forward. (a) True (b) False
- 31.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes forward (b) goes backward
- 32.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
- 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) a balloon (d) a long string
- 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) a long string (d) turmeric powder
- 35.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) forward (c) backward (d) straight down
- 36.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
- 37.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) False (b) True
- 38.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
- 39.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
- 40.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
Answer key
- how big we blow it
- a magnet
- False
- distance it travels
- True
- True
- goes backward
- False
- needed
- we keep it the same
- air from the balloon
- False
- gas from the rocket
- it goes less far
- a drinking straw
- two chairs
- False
- yeast
- it can pop loudly
- a long string
- yeast
- False
- when the air runs out
- False
- goes forward
- keep it away from faces
- not needed
- needed
- the balloon
- False
- goes forward
- goes backward
- a battery cell
- turmeric powder
- forward
- not needed
- True
- True
- goes backward
- we measure it
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