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.True or false: water from the oars goes forward. (a) False (b) True
- 2.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) the balloon (d) water from the oars
- 3.⚖️ 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 tape (c) the same straw (d) the slope of the string
- 4.⚖️ 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 keep it the same (c) we measure it
- 5.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is what we measure. (a) True (b) False
- 6.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
- 7.⚖️ 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
- 8.🛟 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
- 9.True or false: the rocket goes forward. (a) True (b) False
- 10.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
- 11.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) sticky tape (c) a long string (d) a balloon
- 12.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it changes colour (d) it can pop loudly
- 13.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) a mirror (c) a magnet (d) vinegar
- 14.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a balloon (c) a mirror (d) a magnet
- 15.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it goes less far (d) it flies off the string
- 16.True or false: sticky tape is not needed for the balloon rocket. (a) True (b) False
- 17.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
- 18.⚖️ 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
- 19.True or false: a drinking straw is not needed for the balloon rocket. (a) True (b) False
- 20.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a mirror (d) a balloon rocket
- 21.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we measure it (b) we change it (c) we keep it the same
- 22.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
- 23.True or false: a balloon is needed for the balloon rocket. (a) True (b) False
- 24.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) a battery cell (c) vinegar (d) yeast
- 25.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) keep them in your mouth (c) chew them (d) give them to a baby
- 26.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a battery cell (d) a drinking straw
- 27.True or false: yeast is needed for the balloon rocket. (a) False (b) True
- 28.🧺 Which of these is needed for the balloon rocket? (a) two chairs (b) a mirror (c) turmeric powder (d) a battery cell
- 29.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
- 30.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) more friction, less far (b) less friction (c) no change at all (d) it goes faster
- 31.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) gas from the rocket (d) the rocket
- 32.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a balloon (d) yeast
- 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
- 34.True or false: air from the balloon goes backward. (a) True (b) False
- 35.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
- 36.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it travels farther (c) it goes backward first (d) it speeds up
- 37.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
- 38.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) a drinking straw (d) a mirror
- 39.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
- 40.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
Answer key
- False
- water from the oars
- how big we blow it
- we keep it the same
- False
- goes backward
- we keep it the same
- keep it away from faces
- True
- goes backward
- a magnet
- it can pop loudly
- a drinking straw
- a balloon
- it goes less far
- False
- goes forward
- True
- False
- a balloon rocket
- we keep it the same
- True
- True
- a long string
- throw them away safely
- a battery cell
- False
- two chairs
- needed
- more friction, less far
- the rocket
- yeast
- True
- True
- not needed
- it travels less far
- goes forward
- a mirror
- needed
- needed
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