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