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