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.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
- 2.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) distance it travels (b) the slope of the string (c) how big we blow it (d) the same tape
- 3.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) sticky tape (d) a battery cell
- 4.🔮 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
- 5.🚀 Which of these goes forward? (a) the rocket (b) water a swimmer pushes (c) gas from the rocket (d) water from the oars
- 6.🚀 Which of these goes backward? (a) the rowing boat (b) the swimmer (c) air from the balloon (d) the rocket
- 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a magnet (d) two chairs
- 8.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
- 9.🚀 Which of these goes forward? (a) the rowing boat (b) water from the oars (c) air from the balloon (d) gas from the rocket
- 10.⚖️ 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
- 11.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
- 12.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a balloon rocket (c) a sundial (d) a fridge magnet
- 13.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
- 14.⚖️ 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
- 15.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
- 16.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) backward (c) forward (d) it stays still
- 17.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
- 18.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
- 19.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
- 20.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a balloon (c) a mirror (d) a drinking straw
- 21.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) yeast (c) sticky tape (d) a battery cell
- 22.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) sticky tape (c) two chairs (d) vinegar
- 23.⚖️ 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
- 24.True or false: sticky tape is not needed for the balloon rocket. (a) True (b) False
- 25.🚀 Which of these goes backward? (a) the rowing boat (b) water from the oars (c) the swimmer (d) the rocket
- 26.True or false: the rowing boat goes forward. (a) False (b) True
- 27.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a drinking straw (c) a balloon (d) yeast
- 28.True or false: the swimmer goes forward. (a) False (b) True
- 29.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
- 30.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) turmeric powder (c) a drinking straw (d) yeast
- 31.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) a balloon (c) a long string (d) a drinking straw
- 32.🎈 What is the job of the straw on the string? (a) it holds water (b) it guides the balloon (c) it makes it heavier (d) it blows air in
- 33.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
- 34.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) vinegar (c) two chairs (d) a balloon
- 35.True or false: the balloon goes backward. (a) True (b) False
- 36.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
- 37.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
- 38.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
- 39.True or false: turmeric powder is needed for the balloon rocket. (a) True (b) False
- 40.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
Answer key
- goes backward
- how big we blow it
- a battery cell
- it goes less far
- the rocket
- air from the balloon
- a magnet
- not needed
- the rowing boat
- we keep it the same
- False
- a balloon rocket
- False
- True
- goes backward
- forward
- True
- needed
- True
- a mirror
- sticky tape
- vinegar
- we measure it
- False
- water from the oars
- True
- yeast
- True
- needed
- a drinking straw
- a magnet
- it guides the balloon
- goes forward
- vinegar
- False
- not needed
- not needed
- False
- False
- not needed
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