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.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) vinegar (c) turmeric powder (d) sticky tape
- 2.True or false: the balloon goes backward. (a) False (b) True
- 3.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
- 4.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same tape (c) the same straw (d) the same string
- 5.🔮 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
- 6.True or false: the swimmer goes forward. (a) False (b) True
- 7.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) a magnet pulls it (c) the straw is heavy (d) escaping air pushes it
- 8.True or false: water from the oars goes forward. (a) True (b) False
- 9.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) it stays still (c) forward (d) straight down
- 10.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a magnet (d) a drinking straw
- 11.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
- 12.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
- 13.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) vinegar (c) yeast (d) a mirror
- 14.🧺 Which of these is not needed for the balloon rocket? (a) turmeric powder (b) two chairs (c) sticky tape (d) a balloon
- 15.🛟 What should you do with popped balloon pieces? (a) chew them (b) keep them in your mouth (c) give them to a baby (d) throw them away safely
- 16.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
- 17.⚖️ 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
- 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) a magnet (d) sticky tape
- 19.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
- 20.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
- 21.True or false: air from the balloon goes forward. (a) False (b) True
- 22.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
- 23.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes forward (b) goes backward
- 24.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
- 25.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we keep it the same (c) we measure it
- 26.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
- 27.🚀 Which of these goes forward? (a) gas from the rocket (b) water a swimmer pushes (c) water from the oars (d) the rocket
- 28.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) more friction, less far (c) less friction (d) it goes faster
- 29.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the same straw
- 30.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) the same tape (c) how big we blow it
- 31.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a mirror (c) a battery cell (d) two chairs
- 32.⚖️ 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) False (b) True
- 33.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) vinegar (d) sticky tape
- 34.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the slope of the string”? (a) we keep it the same (b) we change it (c) we measure it
- 35.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a drinking straw (c) two chairs (d) sticky tape
- 36.True or false: sticky tape is needed for the balloon rocket. (a) False (b) True
- 37.⚖️ 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
- 38.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
- 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a battery cell (c) a long string (d) a drinking straw
- 40.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a drinking straw (c) a long string (d) a balloon
Answer key
- sticky tape
- False
- needed
- distance it travels
- it goes less far
- True
- escaping air pushes it
- False
- forward
- a magnet
- False
- goes backward
- a long string
- turmeric powder
- throw them away safely
- needed
- False
- a magnet
- we keep it the same
- not needed
- False
- goes backward
- goes forward
- needed
- we keep it the same
- goes forward
- the rocket
- more friction, less far
- the same straw
- the same tape
- two chairs
- True
- vinegar
- we keep it the same
- a mirror
- True
- we measure it
- False
- a battery cell
- turmeric powder
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