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 not needed for the balloon rocket? (a) two chairs (b) a mirror (c) a drinking straw (d) a balloon
- 2.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
- 3.⚖️ 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
- 4.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) yeast (c) sticky tape (d) two chairs
- 5.⚖️ 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
- 6.🧺 Which of these is not needed for the balloon rocket? (a) sticky tape (b) two chairs (c) turmeric powder (d) a balloon
- 7.True or false: a battery cell is not needed for the balloon rocket. (a) True (b) False
- 8.True or false: water from the oars goes forward. (a) True (b) False
- 9.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
- 10.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) sticky tape (c) a battery cell (d) turmeric powder
- 11.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) two chairs (c) a mirror (d) a battery cell
- 12.🛟 Which is a safe rule for the balloon rocket? (a) aim it at your friend (b) keep it away from faces (c) blow it till it bursts (d) put string round a neck
- 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a balloon (c) yeast (d) two chairs
- 14.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
- 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) vinegar (c) a balloon (d) a drinking straw
- 16.🧺 Which of these is needed for the balloon rocket? (a) a magnet (b) turmeric powder (c) a mirror (d) a balloon
- 17.🎈 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
- 18.⚖️ 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 tape
- 19.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
- 20.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same string (b) distance it travels (c) the same straw (d) the slope of the string
- 21.True or false: water a swimmer pushes goes forward. (a) True (b) False
- 22.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
- 23.⚖️ 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 string (c) how big we blow it
- 24.🧺 Do we need sticky tape for the balloon rocket? (a) not needed (b) needed
- 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a battery cell (c) a drinking straw (d) a balloon
- 26.True or false: a long string is not needed for the balloon rocket. (a) False (b) True
- 27.🚀 Which of these goes backward? (a) the balloon (b) water a swimmer pushes (c) the rocket (d) the rowing boat
- 28.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it turns into a kite (c) it can pop loudly (d) it changes colour
- 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 same tape (c) distance it travels (d) the slope of the string
- 30.True or false: gas from the rocket goes backward. (a) False (b) True
- 31.⚖️ 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
- 32.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
- 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
- 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) True (b) False
- 35.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it goes less far (d) it turns into a kite
- 36.True or false: a drinking straw is needed for the balloon rocket. (a) True (b) False
- 37.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) keep them in your mouth (d) throw them away safely
- 38.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it travels less far (d) it speeds up
- 39.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) the string pulls it (d) escaping air pushes it
- 40.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) water from the oars (d) the rowing boat
Answer key
- a mirror
- not needed
- True
- yeast
- we keep it the same
- turmeric powder
- True
- False
- goes forward
- sticky tape
- two chairs
- keep it away from faces
- yeast
- needed
- vinegar
- a balloon
- when the air runs out
- the same tape
- not needed
- distance it travels
- False
- True
- the same string
- needed
- a battery cell
- False
- water a swimmer pushes
- it can pop loudly
- how big we blow it
- True
- True
- needed
- False
- False
- it goes less far
- True
- throw them away safely
- it travels less far
- escaping air pushes it
- water from the oars
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