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