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) how big we blow it (b) the same string (c) the same tape (d) distance it travels
- 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) a drinking straw (c) a long string (d) vinegar
- 3.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a magnet (c) a drinking straw (d) a balloon
- 4.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) vinegar (c) a magnet (d) a battery cell
- 5.True or false: air from the balloon goes backward. (a) True (b) False
- 6.⚖️ 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
- 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a drinking straw (c) a long string (d) a mirror
- 8.🚀 Which of these goes backward? (a) the swimmer (b) the rowing boat (c) gas from the rocket (d) the rocket
- 9.🚀 Which of these goes forward? (a) the balloon (b) water a swimmer pushes (c) gas from the rocket (d) water from the oars
- 10.🧺 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) two chairs
- 11.🛟 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
- 12.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
- 13.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
- 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) distance it travels (c) the same straw
- 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 change it (c) we measure it
- 16.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes less far (b) it flies off the string (c) it turns into a kite (d) it goes much farther
- 17.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) give them to a baby (c) chew them (d) keep them in your mouth
- 18.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is kept the same. (a) True (b) False
- 19.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
- 20.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
- 21.True or false: a magnet is needed for the balloon rocket. (a) False (b) True
- 22.🧺 Which of these is not needed for the balloon rocket? (a) a mirror (b) two chairs (c) a long string (d) sticky tape
- 23.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
- 24.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) a long string (c) a balloon (d) two chairs
- 25.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it makes it heavier (d) it guides the balloon
- 26.🛟 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
- 27.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
- 28.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
- 29.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
- 30.True or false: a long string is not needed for the balloon rocket. (a) True (b) False
- 31.True or false: the balloon goes backward. (a) False (b) True
- 32.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes backward (b) goes forward
- 33.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it goes backward first (c) it travels less far (d) it speeds up
- 34.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
- 35.True or false: the rocket goes backward. (a) True (b) False
- 36.True or false: sticky tape is needed for the balloon rocket. (a) False (b) True
- 37.True or false: the rowing boat goes backward. (a) False (b) True
- 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) sticky tape (c) a balloon (d) a drinking straw
- 39.🚀 In “push back, move forward”, which way does the rowing boat go? (a) goes backward (b) goes forward
- 40.⚖️ 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
Answer key
- how big we blow it
- vinegar
- a magnet
- a drinking straw
- True
- the same string
- a mirror
- gas from the rocket
- the balloon
- turmeric powder
- it can pop loudly
- not needed
- goes forward
- the same straw
- we keep it the same
- it goes less far
- throw them away safely
- True
- goes forward
- needed
- False
- a mirror
- not needed
- a battery cell
- it guides the balloon
- keep it away from faces
- not needed
- not needed
- False
- False
- False
- goes backward
- it travels less far
- goes backward
- False
- True
- False
- a magnet
- goes forward
- we change it
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